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http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Racket | Racket |
#lang racket
(require net/uri-codec)
(uri-decode "http%3A%2F%2Ffoo%20bar%2F")
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Raku | Raku | my @urls = < http%3A%2F%2Ffoo%20bar%2F
google.com/search?q=%60Abdu%27l-Bah%C3%A1 >;
say .subst( :g,
/ [ '%' ( <:hexdigit> ** 2 ) ]+ / ,
{ Blob.new((:16(~$_) for $0)).decode }
) for @urls; |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Metafont | Metafont | string s;
message "write a string: ";
s := readstring;
message s;
message "write a number now: ";
b := scantokens readstring;
if b = 750:
message "You've got it!"
else:
message "Sorry..."
fi;
end |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #min | min | "Enter a string" ask
"Enter an integer" ask int |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Run_BASIC | Run BASIC | html "<TABLE BORDER=1 BGCOLOR=silver>
<TR><TD colspan=2>Please input a string and a number</TD></TR>
<TR><TD align=right>String</TD><TD><input type=text name=str size=18></TD></TR>
<TR><TD align=right>Number</TD><TD><input type=number name=num size=18 value=75000></TD></TR>
<TR><TD colspan=2 align=center>"
button #go, "Accept", [go]
button #ex, "Exit", [ex]
html "</TD></TR></TABLE>"
Wait
[go]
print #request get$("str")
print val(#request get$("num"))
wait
[ex]
end |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Scala | Scala | import swing.Dialog.{Message, showInput}
import scala.swing.Swing
object UserInput extends App {
def responce = showInput(null,
"Complete the sentence:\n\"Green eggs and...\"",
"Customized Dialog",
Message.Plain,
Swing.EmptyIcon,
Nil, "ham")
println(responce)
} |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Rust | Rust | const INPUT: &str = "http://foo bar/";
const MAX_CHAR_VAL: u32 = std::char::MAX as u32;
fn main() {
let mut buff = [0; 4];
println!("{}", INPUT.chars()
.map(|ch| {
match ch as u32 {
0 ..= 47 | 58 ..= 64 | 91 ..= 96 | 123 ..= MAX_CHAR_VAL => {
ch.encode_utf8(&mut buff);
buff[0..ch.len_utf8()].iter().map(|&byte| format!("%{:X}", byte)).collect::<String>()
},
_ => ch.to_string(),
}
})
.collect::<String>()
);
} |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Scala | Scala | import java.net.{URLDecoder, URLEncoder}
import scala.compat.Platform.currentTime
object UrlCoded extends App {
val original = """http://foo bar/"""
val encoded: String = URLEncoder.encode(original, "UTF-8")
assert(encoded == "http%3A%2F%2Ffoo+bar%2F", s"Original: $original not properly encoded: $encoded")
val percentEncoding = encoded.replace("+", "%20")
assert(percentEncoding == "http%3A%2F%2Ffoo%20bar%2F", s"Original: $original not properly percent-encoded: $percentEncoding")
assert(URLDecoder.decode(encoded, "UTF-8") == URLDecoder.decode(percentEncoding, "UTF-8"))
println(s"Successfully completed without errors. [total ${currentTime - executionStart} ms]")
} |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #OxygenBasic | OxygenBasic |
'WAYS OF DECLARING VARIABLES
'AND ASSIGNING VALUES
var int a,b,c,d
int a=1,b=2,c=3,d=4
dim int a=1,b=2, c=3, d=4
dim as int a=1,b=2, c=3, d=4
dim a=1,b=2, c=3, d=4 as int
print c '3
'CREATING ARRAY VARIABLES
int array[100]
dim int a={10,20,30,40} 'implicit array
print a[3] '30
'COMMONLY USED TYPES:
'byte word int sys float char string
'LIMITING SCOPE
dim int a=10
scope
dim int a=100
dim int b=1000
print a '100
end scope
print a 'prior a: 10
print b 'error b is out of scope
'REFERENCING VARIABLES
dim int*p 'p is a pointer variable
dim int a={2,4,6,8}
@p=@a[3] 'address of p is assigned address of a[3]
print @p 'the address
print p '6
print p[1] '6
print p[2] '8
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Oz | Oz | declare
Var %% new variable Var, initially free
{Show Var}
Var = 42 %% now Var has the value 42
{Show Var}
Var = 42 %% the same value is assigned again: ok
Var = 43 %% a different value is assigned: exception |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Maple | Maple | with(LinearAlgebra):
A := Vector([3,4,5]):
B := Vector([4,3,5]):
C := Vector([-5,-12,-13]):
>>>A.B;
49
>>>CrossProduct(A,B);
Vector([5, 5, -7])
>>>A.(CrossProduct(B,C));
6
>>>CrossProduct(A,CrossProduct(B,C));
Vector([-267, 204, -3]) |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Red | Red | >> dehex "http%3A%2F%2Ffoo%20bar%2F"
== "http://foo bar/"
>> dehex "google.com/search?q=%60Abdu%27l-Bah%C3%A1"
== "google.com/search?q=`Abdu'l-Bahá" |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Retro | Retro | create buffer 32000 allot
{{
create bit 5 allot
: extract ( $c-$a ) drop @+ bit ! @+ bit 1+ ! bit ;
: render ( $c-$n )
dup '+ = [ drop 32 ] ifTrue
dup 13 = [ drop 32 ] ifTrue
dup 10 = [ drop 32 ] ifTrue
dup '% = [ extract hex toNumber decimal ] ifTrue ;
: <decode> ( $-$ ) repeat @+ 0; render ^buffer'add again ;
---reveal---
: decode ( $- ) buffer ^buffer'set <decode> drop ;
}}
"http%3A%2F%2Ffoo%20bar%2F" decode buffer puts |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Mirah | Mirah | s = System.console.readLine()
puts s |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #mIRC_Scripting_Language | mIRC Scripting Language | alias askmesomething {
echo -a You answered: $input(What's your name?, e)
} |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Scratch | Scratch | var gtk2 = require('Gtk2') -> init;
var gui = %s'Gtk2::Builder'.new;
gui.add_from_string(DATA.slurp);
func clicked_ok(*_) {
var entry = gui.get_object('entry1');
var text = entry.get_text;
var spinner = gui.get_object('spinbutton1');
var number = spinner.get_text;
say "string: #{text}";
say "number: #{number}";
number == 75000 ? gtk2.main_quit : warn "Invalid number!";
}
func clicked_cancel(*_) {
gtk2.main_quit;
}
gui.get_object('button1').signal_connect('clicked', clicked_ok);
gui.get_object('button2').signal_connect('clicked', clicked_cancel);
gtk2.main;
__DATA__
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk+" version="2.24"/>
<!-- interface-naming-policy project-wide -->
<object class="GtkAdjustment" id="adjustment1">
<property name="upper">100000</property>
<property name="value">75000</property>
<property name="step_increment">1</property>
<property name="page_increment">10</property>
</object>
<object class="GtkWindow" id="window1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Please insert a string and a number:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">string:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">55</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="invisible_char">•</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">number:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkSpinButton" id="spinbutton1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="invisible_char">•</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
<property name="adjustment">adjustment1</property>
<property name="numeric">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">2</property>
</packing>
</child>
<child>
<object class="GtkHButtonBox" id="hbuttonbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="layout_style">spread</property>
<child>
<object class="GtkButton" id="button1">
<property name="label">gtk-ok</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button2">
<property name="label">gtk-cancel</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">3</property>
</packing>
</child>
</object>
</child>
</object>
</interface> |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Seed7 | Seed7 | $ include "seed7_05.s7i";
include "encoding.s7i";
const proc: main is func
begin
writeln(toPercentEncoded("http://foo bar/"));
writeln(toUrlEncoded("http://foo bar/"));
end func; |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Sidef | Sidef | func urlencode(str) {
str.gsub!(%r"([^-A-Za-z0-9_.!~*'() ])", {|a| "%%%02X" % a.ord});
str.gsub!(' ', '+');
return str;
}
say urlencode('http://foo bar/'); |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Tcl | Tcl | # Encode all except "unreserved" characters; use UTF-8 for extended chars.
# See http://tools.ietf.org/html/rfc3986 §2.4 and §2.5
proc urlEncode {str} {
set uStr [encoding convertto utf-8 $str]
set chRE {[^-A-Za-z0-9._~\n]}; # Newline is special case!
set replacement {%[format "%02X" [scan "\\\0" "%c"]]}
return [string map {"\n" "%0A"} [subst [regsub -all $chRE $uStr $replacement]]]
} |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PARI.2FGP | PARI/GP | 'x |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Pascal | Pascal | sub dofruit {
$fruit='apple';
}
dofruit;
print "The fruit is $fruit"; |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Mathematica.2FWolfram_Language | Mathematica/Wolfram Language | a={3,4,5};
b={4,3,5};
c={-5,-12,-13};
a.b
Cross[a,b]
a.Cross[b,c]
Cross[a,Cross[b,c]] |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #REXX | REXX | /* Rexx */
Do
X = 0
url. = ''
X = X + 1; url.0 = X; url.X = 'http%3A%2F%2Ffoo%20bar%2F'
X = X + 1; url.0 = X; url.X = 'mailto%3A%22Ivan%20Aim%22%20%3Civan%2Eaim%40email%2Ecom%3E'
X = X + 1; url.0 = X; url.X = '%6D%61%69%6C%74%6F%3A%22%49%72%6D%61%20%55%73%65%72%22%20%3C%69%72%6D%61%2E%75%73%65%72%40%6D%61%69%6C%2E%63%6F%6D%3E'
Do u_ = 1 to url.0
Say url.u_
Say DecodeURL(url.u_)
Say
End u_
Return
End
Exit
DecodeURL:
Procedure
Do
Parse Arg encoded
decoded = ''
PCT = '%'
Do while length(encoded) > 0
Parse Var encoded head (PCT) +1 code +2 tail
decoded = decoded || head
Select
When length(strip(code, 'T')) = 2 & datatype(code, 'X') then Do
code = x2c(code)
decoded = decoded || code
End
When length(strip(code, 'T')) \= 0 then Do
decoded = decoded || PCT
tail = code || tail
End
Otherwise Do
Nop
End
End
encoded = tail
End
Return decoded
End
Exit
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Ruby | Ruby | require 'cgi'
puts CGI.unescape("http%3A%2F%2Ffoo%20bar%2F")
# => "http://foo bar/" |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Modula-3 | Modula-3 | MODULE Input EXPORTS Main;
IMPORT IO, Fmt;
VAR string: TEXT;
number: INTEGER;
BEGIN
IO.Put("Enter a string: ");
string := IO.GetLine();
IO.Put("Enter a number: ");
number := IO.GetInt();
IO.Put("You entered: " & string & " and " & Fmt.Int(number) & "\n");
END Input. |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #MUMPS | MUMPS | TXTINP
NEW S,N
WRITE "Enter a string: "
READ S,!
WRITE "Enter the number 75000: "
READ N,!
KILL S,N
QUIT |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Sidef | Sidef | var gtk2 = require('Gtk2') -> init;
var gui = %s'Gtk2::Builder'.new;
gui.add_from_string(DATA.slurp);
func clicked_ok(*_) {
var entry = gui.get_object('entry1');
var text = entry.get_text;
var spinner = gui.get_object('spinbutton1');
var number = spinner.get_text;
say "string: #{text}";
say "number: #{number}";
number == 75000 ? gtk2.main_quit : warn "Invalid number!";
}
func clicked_cancel(*_) {
gtk2.main_quit;
}
gui.get_object('button1').signal_connect('clicked', clicked_ok);
gui.get_object('button2').signal_connect('clicked', clicked_cancel);
gtk2.main;
__DATA__
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk+" version="2.24"/>
<!-- interface-naming-policy project-wide -->
<object class="GtkAdjustment" id="adjustment1">
<property name="upper">100000</property>
<property name="value">75000</property>
<property name="step_increment">1</property>
<property name="page_increment">10</property>
</object>
<object class="GtkWindow" id="window1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Please insert a string and a number:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">string:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">55</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="invisible_char">•</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="label3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">number:</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkSpinButton" id="spinbutton1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="invisible_char">•</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
<property name="adjustment">adjustment1</property>
<property name="numeric">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">2</property>
</packing>
</child>
<child>
<object class="GtkHButtonBox" id="hbuttonbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="layout_style">spread</property>
<child>
<object class="GtkButton" id="button1">
<property name="label">gtk-ok</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button2">
<property name="label">gtk-cancel</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">3</property>
</packing>
</child>
</object>
</child>
</object>
</interface> |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #TUSCRIPT | TUSCRIPT |
$$ MODE TUSCRIPT
text="http://foo bar/"
BUILD S_TABLE spez_char="::>/:</::<%:"
spez_char=STRINGS (text,spez_char)
LOOP/CLEAR c=spez_char
c=ENCODE(c,hex),c=concat("%",c),spez_char=APPEND(spez_char,c)
ENDLOOP
url_encoded=SUBSTITUTE(text,spez_char,0,0,spez_char)
print "text: ", text
PRINT "encoded: ", url_encoded
|
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #UNIX_Shell | UNIX Shell | function urlencode
{
typeset decoded=$1 encoded= rest= c=
typeset rest2= bug='rest2=${rest}'
if [[ -z ${BASH_VERSION} ]]; then
# bug /usr/bin/sh HP-UX 11.00
typeset _decoded='xyz%26xyz'
rest="${_decoded#?}"
c="${_decoded%%${rest}}"
if (( ${#c} != 1 )); then
typeset qm='????????????????????????????????????????????????????????????????????????'
typeset bug='(( ${#rest} > 0 )) && typeset -L${#rest} rest2="${qm}" || rest2=${rest}'
fi
fi
rest="${decoded#?}"
eval ${bug}
c="${decoded%%${rest2}}"
decoded="${rest}"
while [[ -n ${c} ]]; do
case ${c} in
[-a-zA-z0-9.])
;;
' ')
c='+'
;;
*)
c=$(printf "%%%02X" "'$c")
;;
esac
encoded="${encoded}${c}"
rest="${decoded#?}"
eval ${bug}
c="${decoded%%${rest2}}"
decoded="${rest}"
done
if [[ -n ${BASH_VERSION:-} ]]; then
\echo -E "${encoded}"
else
print -r -- "${encoded}"
fi
}
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Perl | Perl | sub dofruit {
$fruit='apple';
}
dofruit;
print "The fruit is $fruit"; |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Phix | Phix | <-------- object --------->
| |
+-atom +-sequence
| |
+-integer +-string
|
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #MATLAB_.2F_Octave | MATLAB / Octave | % Create a named function/subroutine/method to compute the dot product of two vectors.
dot(a,b)
% Create a function to compute the cross product of two vectors.
cross(a,b)
% Optionally create a function to compute the scalar triple product of three vectors.
dot(a,cross(b,c))
% Optionally create a function to compute the vector triple product of three vectors.
cross(a,cross(b,c))
% Compute and display: a • b
cross(a,b)
% Compute and display: a x b
cross(a,b)
% Compute and display: a • b x c, the scaler triple product.
dot(a,cross(b,c))
% Compute and display: a x b x c, the vector triple product.
cross(a,cross(b,c)) |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Rust | Rust | const INPUT1: &str = "http%3A%2F%2Ffoo%20bar%2F";
const INPUT2: &str = "google.com/search?q=%60Abdu%27l-Bah%C3%A1";
fn append_frag(text: &mut String, frag: &mut String) {
if !frag.is_empty() {
let encoded = frag.chars()
.collect::<Vec<char>>()
.chunks(2)
.map(|ch| {
u8::from_str_radix(&ch.iter().collect::<String>(), 16).unwrap()
}).collect::<Vec<u8>>();
text.push_str(&std::str::from_utf8(&encoded).unwrap());
frag.clear();
}
}
fn decode(text: &str) -> String {
let mut output = String::new();
let mut encoded_ch = String::new();
let mut iter = text.chars();
while let Some(ch) = iter.next() {
if ch == '%' {
encoded_ch.push_str(&format!("{}{}", iter.next().unwrap(), iter.next().unwrap()));
} else {
append_frag(&mut output, &mut encoded_ch);
output.push(ch);
}
}
append_frag(&mut output, &mut encoded_ch);
output
}
fn main() {
println!("{}", decode(INPUT1));
println!("{}", decode(INPUT2));
} |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Scala | Scala | import java.net.{URLDecoder, URLEncoder}
import scala.compat.Platform.currentTime
object UrlCoded extends App {
val original = """http://foo bar/"""
val encoded: String = URLEncoder.encode(original, "UTF-8")
assert(encoded == "http%3A%2F%2Ffoo+bar%2F", s"Original: $original not properly encoded: $encoded")
val percentEncoding = encoded.replace("+", "%20")
assert(percentEncoding == "http%3A%2F%2Ffoo%20bar%2F", s"Original: $original not properly percent-encoded: $percentEncoding")
assert(URLDecoder.decode(encoded, "UTF-8") == URLDecoder.decode(percentEncoding, "UTF-8"))
println(s"Successfully completed without errors. [total ${currentTime - executionStart} ms]")
} |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Nanoquery | Nanoquery | string = str(input("Enter a string: "))
integer = int(input("Enter an integer: ")) |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Neko | Neko | /**
User input/Text, in Neko
Tectonics:
nekoc userinput.neko
neko userinput
*/
var stdin = $loader.loadprim("std@file_stdin", 0)()
var file_read_char = $loader.loadprim("std@file_read_char", 1)
/* Read a line from file f into string s returning length without any newline */
var NEWLINE = 10
var readline = function(f, s) {
var len = 0
var ch
while true {
try ch = file_read_char(f) catch a break;
if ch == NEWLINE break;
if $sset(s, len, ch) == null break; else len += 1
}
return $ssub(s, 0, len)
}
$print("Enter a line of text, then the number 75000\n")
try {
var RECL = 132
var str = $smake(RECL)
var userstring = readline(stdin, str)
$print(":", userstring, ":\n")
var num = $int(readline(stdin, str))
if num == 75000 $print("Rosetta Code 75000, for the win!\n")
else $print("Sorry, need 75000\n")
} catch problem $print("Exception: ", problem, "\n") |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Standard_ML | Standard ML | open XWindows ;
open Motif ;
val store : string list ref = ref [] ;
val inputWindow = fn () =>
let
val shell = XtAppInitialise "" "demo" "top" [] [ XmNwidth 320, XmNheight 100 ] ;
val main = XmCreateMainWindow shell "main" [ XmNmappedWhenManaged true ] ;
val enter = XmCreateText main "inputarea" [ XmNeditMode XmSINGLE_LINE_EDIT,
XmNscrollHorizontal false ] ;
val getinp = fn (w,s,t) => ( store := XmTextGetString enter :: !store ; t )
in
(
XtSetCallbacks enter [ (XmNactivateCallback , getinp) ] XmNarmCallback ;
XtManageChild enter ;
XtManageChild main ;
XtRealizeWidget shell
)
end ;
inputWindow () ; |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Tcl | Tcl | # create entry widget:
pack [entry .e1]
# read its content:
set input [.e get] |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #VBScript | VBScript | Function UrlEncode(url)
For i = 1 To Len(url)
n = Asc(Mid(url,i,1))
If (n >= 48 And n <= 57) Or (n >= 65 And n <= 90) _
Or (n >= 97 And n <= 122) Then
UrlEncode = UrlEncode & Mid(url,i,1)
Else
ChrHex = Hex(Asc(Mid(url,i,1)))
For j = 0 to (Len(ChrHex) / 2) - 1
UrlEncode = UrlEncode & "%" & Mid(ChrHex,(2*j) + 1,2)
Next
End If
Next
End Function
WScript.Echo UrlEncode("http://foo baré/") |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Vlang | Vlang | import net.urllib
fn main() {
println(urllib.query_escape("http://foo bar/"))
} |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PHP | PHP | <?php
/**
* @author Elad Yosifon
*/
/*
* PHP is a weak typed language,
* no separation between variable declaration, initialization and assignment.
*
* variable type is defined by the value that is assigned to it.
* a variable name must start with a "$" sign (called "sigil", not a dollar sign).
* variable naming rules:
* + case-sensitive.
* + first character after $ must not be a number.
* + after the first character all alphanumeric chars and _(underscore) sign is allowed, e.g. $i_am_a_new_var_with_the_number_0
*
*/
# NULL typed variable
$null = NULL; var_dump($null); // output: null
# defining a boolean
$boolean = true; var_dump($boolean); // output: boolean true
$boolean = false; var_dump($boolean); // output: boolean false
/*
* casting is made using (TYPE) as a prefix
*/
# bool and boolean is the same
$boolean = (bool)1; var_dump($boolean); // output: boolean true
$boolean = (boolean)1; var_dump($boolean); // output: boolean true
$boolean = (bool)0; var_dump($boolean); // output: boolean false
$boolean = (boolean)0; var_dump($boolean); // output: boolean false
# defining an integer
$int = 0; var_dump($int); // output: int 0
# defining a float,
$float = 0.01; var_dump($float); // output: float 0.01
# which is also identical to "real" and "double"
var_dump((double)$float); // output: float 0.01
var_dump((real)$float); // output: float 0.01
# casting back to int (auto flooring the value)
var_dump((int)$float); // output: int 0
var_dump((int)($float+1)); // output: int 1
var_dump((int)($float+1.9)); // output: int 1
# defining a string
$string = 'string';
var_dump($string); // output: string 'string' (length=6)
# referencing a variable (there are no pointers in PHP).
$another_string = &$string;
var_dump($another_string);
// output: string 'string' (length=6)
$string = "I'm the same string!";
var_dump($another_string);
// output: string 'I'm the same string!' (length=20)
# "deleting" a variable from memory
unset($another_string);
$string = 'string';
/*
* a string can also be defined with double-quotes, HEREDOC and NOWDOC operators.
* content inside double-quotes is being parsed before assignment.
* concatenation operator is .=
*/
$parsed_string = "This is a $string";
var_dump($parsed_string);
// output: string 'This is a string' (length=16)
$parsed_string .= " with another {$string}";
var_dump($parsed_string);
// output: string 'This is a string with another string' (length=36)
# with string parsing
$heredoc = <<<HEREDOC
This is the content of \$string: {$string}
HEREDOC;
var_dump($heredoc);
// output: string 'This is the content of $string: string' (length=38)
# without string parsing (notice the single quotes surrounding NOWDOC)
$nowdoc = <<<'NOWDOC'
This is the content of \$string: {$string}
NOWDOC;
var_dump($nowdoc);
// output: string 'This is the content of \$string: {$string}' (length=42)
# as of PHP5, defining an object typed stdClass => standard class
$stdObject = new stdClass(); var_dump($stdObject);
// output: object(stdClass)[1]
# defining an object typed Foo
class Foo {}
$foo = new Foo(); var_dump($foo);
// output: object(Foo)[2]
# defining an empty array
$array = array(); var_dump($array);
// output: array {empty}
/*
* an array with non-integer key is also considered as an associative array(i.e. hash table)
* can contain mixed variable types, can contain integer based keys and non-integer keys
*/
$assoc = array(
0 => $int,
'integer' => $int,
1 => $float,
'float' => $float,
2 => $string,
'string' => $string,
3 => NULL, // <=== key 3 is NULL
3, // <=== this is a value, not a key (key is 4)
5 => $stdObject,
'Foo' => $foo,
);
var_dump($assoc);
// output:
// =======
// array
// 0 => int 0
// 'integer' => int 0
// 1 => float 0.01
// 'float' => float 0.01
// 2 => string 'string' (length=6)
// 'string' => string 'string' (length=6)
// 3 => null
// 4 => int 3
// 5 =>
// object(stdClass)[1]
// 'Foo' =>
// object(Foo)[2]
/*
* all variables are "global" but not reachable inside functions(unless specifically "globalized" inside)
*/
function a_function()
{
# not reachable
var_dump(isset($foo)); // output: boolean false
global $foo;
# "global" (reachable) inside a_function()'s scope
var_dump(isset($foo)); // output: boolean true
}
a_function();
/**
* there is another special type of variable called (Resource).
* for more info regarding Resources:
* @url http://php.net/manual/en/language.types.resource.php
* @url http://php.net/manual/en/resource.php
*/
|
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Mercury | Mercury | :- module vector_product.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module int, list, string.
main(!IO) :-
A = vector3d(3, 4, 5),
B = vector3d(4, 3, 5),
C = vector3d(-5, -12, -13),
io.format("A . B = %d\n", [i(A `dot_product` B)], !IO),
io.format("A x B = %s\n", [s(to_string(A `cross_product` B))], !IO),
io.format("A . (B x C) = %d\n", [i(scalar_triple_product(A, B, C))], !IO),
io.format("A x (B x C) = %s\n", [s(to_string(vector_triple_product(A, B, C)))], !IO).
:- type vector3d ---> vector3d(int, int, int).
:- func dot_product(vector3d, vector3d) = int.
dot_product(vector3d(A1, A2, A3), vector3d(B1, B2, B3)) =
A1 * B1 + A2 * B2 + A3 * B3.
:- func cross_product(vector3d, vector3d) = vector3d.
cross_product(vector3d(A1, A2, A3), vector3d(B1, B2, B3)) =
vector3d(A2 * B3 - A3 * B2, A3 * B1 - A1 * B3, A1 * B2 - A2 * B1).
:- func scalar_triple_product(vector3d, vector3d, vector3d) = int.
scalar_triple_product(A, B, C) = A `dot_product` (B `cross_product` C).
:- func vector_triple_product(vector3d, vector3d, vector3d) = vector3d.
vector_triple_product(A, B, C) = A `cross_product` (B `cross_product` C).
:- func to_string(vector3d) = string.
to_string(vector3d(X, Y, Z)) =
string.format("(%d, %d, %d)", [i(X), i(Y), i(Z)]). |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Seed7 | Seed7 | $ include "seed7_05.s7i";
include "encoding.s7i";
const proc: main is func
begin
writeln(fromPercentEncoded("http%3A%2F%2Ffoo%20bar%2F"));
writeln(fromUrlEncoded("http%3A%2F%2Ffoo+bar%2F"));
end func; |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Sidef | Sidef | func urldecode(str) {
str.gsub!('+', ' ');
str.gsub!(/\%([A-Fa-f0-9]{2})/, {|a| 'C'.pack(a.hex)});
return str;
}
say urldecode('http%3A%2F%2Ffoo+bar%2F'); # => "http://foo bar/" |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Nemerle | Nemerle | using System;
using System.Console;
module Input
{
Main() : void
{
Write("Enter a string:");
_ = ReadLine()
mutable entry = 0;
mutable numeric = false;
do
{
Write("Enter 75000:");
numeric = int.TryParse(ReadLine(), out entry);
} while ((!numeric) || (entry != 75000))
}
} |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref symbols nobinary
checkVal = 75000
say 'Input a string then the number' checkVal
parse ask inString
parse ask inNumber .
say 'Input string:' inString
say 'Input number:' inNumber
if inNumber == checkVal then do
say 'Success! Input number is as requested'
end
else do
say 'Failure! Number' inNumber 'is not' checkVal
end
return
|
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #TI-89_BASIC | TI-89 BASIC | Prgm
Dialog
Title "Rosetta Code"
Request "A string", s
DropDown "An integer", {"75000"}, n
EndDlog
74999 + n → n
EndPrgm |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #VBScript | VBScript | strUserIn = InputBox("Enter Data")
Wscript.Echo strUserIn |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Wren | Wren | import "/fmt" for Fmt
var urlEncode = Fn.new { |url|
var res = ""
for (b in url.bytes) {
if ((b >= 48 && b <= 57) || (b >= 65 && b <= 90) || (b >= 97 && b <= 122)) {
res = res + String.fromByte(b)
} else {
res = res + Fmt.swrite("\%$2X", b)
}
}
return res
}
var urls = [
"http://foo bar/",
"mailto:\"Ivan Aim\" <[email protected]>",
"mailto:\"Irma User\" <[email protected]>",
"http://foo.bar.com/~user-name/_subdir/*~.html"
]
for (url in urls) System.print(urlEncode.call(url)) |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #XPL0 | XPL0 | code Text=12;
string 0; \use zero-terminated strings
func Encode(S0); \Encode URL string and return its address
char S0;
char HD, S1(80); \BEWARE: very temporary string space returned
int C, I, J;
[HD:= "0123456789ABCDEF"; \hex digits
I:= 0; J:= 0;
repeat C:= S0(I); I:= I+1;
if C>=^0 & C<=^9 ! C>=^A & C<=^Z ! C>=^a & C<=^z ! C=0
then [S1(J):= C; J:= J+1] \simply pass char to S1
else [S1(J):= ^%; J:= J+1; \encode char into S1
S1(J):= HD(C>>4); J:= J+1;
S1(J):= HD(C&$0F); J:= J+1;
];
until C=0;
return S1;
];
Text(0, Encode("http://foo bar/")) |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PicoLisp | PicoLisp | (use (A B C)
(setq A 1 B 2 C 3)
... ) |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PL.2FI | PL/I | /* The PROCEDURE block and BEGIN block are used to delimit scopes. */
declare i float; /* external, global variable, excluded from the */
/* local area (BEGIN block) below. */
begin;
declare (i, j) fixed binary; /* local variable */
get list (i, j);
put list (i,j);
end;
/* Examples of initialization. */
declare p fixed initial (25);
declare q(7) fixed initial (9, 3, 5, 1, 2, 8, 15);
/* sets all elements of array Q at run time, on block entry. */
declare r(7) fixed initial (9, 3, 5, 1, 2, 8, 15);
/* sets all elements of array R at compile time. */
p = 44; /* run-time assignment. */
q = 0; /* run-time initialization of all elements of Q to zero. */
q = r; /* run-time assignment of all elements of array R to */
/* corresponding elemets of S. */ |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #MiniScript | MiniScript | vectorA = [3, 4, 5]
vectorB = [4, 3, 5]
vectorC = [-5, -12, -13]
dotProduct = function(x, y)
return x[0]*y[0] + x[1]*y[1] + x[2]*y[2]
end function
crossProduct = function(x, y)
return [x[1]*y[2] - x[2]*y[1], x[2]*y[0] - x[0]*y[2], x[0]*y[1] - x[1]*y[0]]
end function
print "Dot Product = " + dotProduct(vectorA, vectorB)
print "Cross Product = " + crossProduct(vectorA, vectorB)
print "Scalar Triple Product = " + dotProduct(vectorA, crossProduct(vectorB,vectorC))
print "Vector Triple Product = " + crossProduct(vectorA, crossProduct(vectorB,vectorC))
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Swift | Swift | import Foundation
let encoded = "http%3A%2F%2Ffoo%20bar%2F"
if let normal = encoded.stringByReplacingPercentEscapesUsingEncoding(NSUTF8StringEncoding) {
println(normal)
} |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Tcl | Tcl | proc urlDecode {str} {
set specialMap {"[" "%5B" "]" "%5D"}
set seqRE {%([0-9a-fA-F]{2})}
set replacement {[format "%c" [scan "\1" "%2x"]]}
set modStr [regsub -all $seqRE [string map $specialMap $str] $replacement]
return [encoding convertfrom utf-8 [subst -nobackslash -novariable $modStr]]
} |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #newLISP | newLISP | (print "Enter an integer: ")
(set 'x (read-line))
(print "Enter a string: ")
(set 'y (read-line)) |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Nim | Nim | import rdstdin, strutils
let str = readLineFromStdin "Input a string: "
let num = parseInt(readLineFromStdin "Input an integer: ") |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Vedit_macro_language | Vedit macro language | Dialog_Input_1(1, "`User Input example`,
`??Enter a string `,
`??Enter a number `") |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Visual_Basic | Visual Basic | import "graphics" for Canvas, Color
import "input" for Keyboard, Clipboard
import "dome" for Window, Process
var X = 10
var Y = 28
class Main {
construct new() {}
init() {
_text = ""
_enterNum = false
Keyboard.handleText = true
Keyboard.textRegion(X, Y, 8, 8)
}
update() {
var change = false
if (Keyboard.text.count > 0) {
_text = _text + Keyboard.text
change = true
}
// enable backspace key to delete last character entered
if (Keyboard["backspace"].justPressed && _text.count > 0) {
var codePoints = _text.codePoints
codePoints = codePoints.take(codePoints.count - 1)
_text = ""
for (point in codePoints) {
_text = _text + String.fromCodePoint(point)
}
change = true
}
// enable return key to terminate input
if (Keyboard["return"].justPressed) {
System.print("'%(_text)' was entered.")
if (!_enterNum) {
_text = ""
_enterNum = true
change = true
} else if (_text == "75000") {
Process.exit()
} else {
_text = ""
change = true
}
}
if (change) {
Keyboard.textRegion(X.min(_text.count * 8), Y, 8, 8)
}
}
draw(dt) {
Canvas.cls()
Canvas.rect(X, Y, 8, 8, Color.red)
if (!_enterNum) {
Canvas.print("Enter Text and press return:", 10, 10, Color.white)
} else {
Canvas.print("Enter 75000 and press return:", 10, 10, Color.white)
}
Canvas.print(_text, 10, 20, Color.white)
}
}
var Game = Main.new() |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #Yabasic | Yabasic | sub encode_url$(s$, exclusions$, spaceplus)
local res$, i, ch$
for i=1 to len(s$)
ch$ = mid$(s$, i, 1)
if ch$ = " " and spaceplus then
ch$ = "+"
elsif not instr(esclusions$, ch$) and (ch$ < "0" or (ch$ > "9" and ch$ < "A") or (ch$ > "Z" and ch$ < "a") or ch$ > "z") then
res$ = res$ + "%"
ch$ = upper$(hex$(asc(ch$)))
end if
res$ = res$ + ch$
next i
return res$
end sub
print encode_url$("http://foo bar/") |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
For the purposes of this task, every character except 0-9, A-Z and a-z requires conversion, so the following characters all require conversion by default:
ASCII control codes (Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal).
ASCII symbols (Character ranges 32-47 decimal (20-2F hex))
ASCII symbols (Character ranges 58-64 decimal (3A-40 hex))
ASCII symbols (Character ranges 91-96 decimal (5B-60 hex))
ASCII symbols (Character ranges 123-126 decimal (7B-7E hex))
Extended characters with character codes of 128 decimal (80 hex) and above.
Example
The string "http://foo bar/" would be encoded as "http%3A%2F%2Ffoo%20bar%2F".
Variations
Lowercase escapes are legal, as in "http%3a%2f%2ffoo%20bar%2f".
Some standards give different rules: RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, section 2.3, says that "-._~" should not be encoded. HTML 5, section 4.10.22.5 URL-encoded form data, says to preserve "-._*", and to encode space " " to "+". The options below provide for utilization of an exception string, enabling preservation (non encoding) of particular characters to meet specific standards.
Options
It is permissible to use an exception string (containing a set of symbols
that do not need to be converted).
However, this is an optional feature and is not a requirement of this task.
Related tasks
URL decoding
URL parser
| #zkl | zkl | var CURL=Import("zklCurl");
CURL.urlEncode("http://foo bar/") //--> "http%3A%2F%2Ffoo%20bar%2F" |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Pony | Pony | var counter: I32 = 10 // mutable variable 'counter' with value 10
let temp: F64 = 36.6 // immutable variable 'temp'
let str: String // immutable variable 'str' with no initial value
str = "i am a string" // variables must be initialized before use
let another_str = "i am another string" // type of variable 'another_str' infered from assigned value
let b = true
let b' = false // variable names can contain ' to make a distinct variable with almost the same name |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PowerShell | PowerShell | $s = "abc"
$i = 123 |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #.D0.9C.D0.9A-61.2F52 | МК-61/52 | ПП 54 С/П ПП 66 С/П
ИП0 ИП3 ИП6 П3 -> П0 -> П6
ИП1 ИП4 ИП7 П4 -> П1 -> П7
ИП2 ИП5 ИП8 П5 -> П2 -> П8
ПП 66
ИП6 ИП7 ИП8 П2 -> П1 -> П0
ИП9 ИПA ИПB П5 -> П4 -> П3
ПП 54 С/П ПП 66 С/П
ИП0 ИП3 * ИП1 ИП4 * + ИП2 ИП5 * + В/О
ИП1 ИП5 * ИП2 ИП4 * - П9
ИП2 ИП3 * ИП0 ИП5 * - ПA
ИП0 ИП4 * ИП1 ИП3 * - ПB В/О |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #TUSCRIPT | TUSCRIPT |
$$ MODE TUSCRIPT
url_encoded="http%3A%2F%2Ffoo%20bar%2F"
BUILD S_TABLE hex=":%><:><2<>2<%:"
hex=STRINGS (url_encoded,hex), hex=SPLIT(hex)
hex=DECODE (hex,hex)
url_decoded=SUBSTITUTE(url_encoded,":%><2<>2<%:",0,0,hex)
PRINT "encoded: ", url_encoded
PRINT "decoded: ", url_decoded
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #UNIX_Shell | UNIX Shell | urldecode() { local u="${1//+/ }"; printf '%b' "${u//%/\\x}"; } |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #NS-HUBASIC | NS-HUBASIC | 10 INPUT "ENTER A STRING: ",STRING$
20 PRINT "YOU ENTERED ";STRING$;"."
30 INPUT "ENTER AN INTEGER: ",INTEGER
40 PRINT "YOU ENTERED";INTEGER;"." |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Oberon-2 | Oberon-2 |
MODULE InputText;
IMPORT
In,
Out;
VAR
i: INTEGER;
str: ARRAY 512 OF CHAR;
BEGIN
Out.String("Enter a integer: ");Out.Flush();In.Int(i);
Out.String("Enter a string: ");Out.Flush();In.String(str);
END InputText.
|
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Wren | Wren | import "graphics" for Canvas, Color
import "input" for Keyboard, Clipboard
import "dome" for Window, Process
var X = 10
var Y = 28
class Main {
construct new() {}
init() {
_text = ""
_enterNum = false
Keyboard.handleText = true
Keyboard.textRegion(X, Y, 8, 8)
}
update() {
var change = false
if (Keyboard.text.count > 0) {
_text = _text + Keyboard.text
change = true
}
// enable backspace key to delete last character entered
if (Keyboard["backspace"].justPressed && _text.count > 0) {
var codePoints = _text.codePoints
codePoints = codePoints.take(codePoints.count - 1)
_text = ""
for (point in codePoints) {
_text = _text + String.fromCodePoint(point)
}
change = true
}
// enable return key to terminate input
if (Keyboard["return"].justPressed) {
System.print("'%(_text)' was entered.")
if (!_enterNum) {
_text = ""
_enterNum = true
change = true
} else if (_text == "75000") {
Process.exit()
} else {
_text = ""
change = true
}
}
if (change) {
Keyboard.textRegion(X.min(_text.count * 8), Y, 8, 8)
}
}
draw(dt) {
Canvas.cls()
Canvas.rect(X, Y, 8, 8, Color.red)
if (!_enterNum) {
Canvas.print("Enter Text and press return:", 10, 10, Color.white)
} else {
Canvas.print("Enter 75000 and press return:", 10, 10, Color.white)
}
Canvas.print(_text, 10, 20, Color.white)
}
}
var Game = Main.new() |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Prolog | Prolog | mortal(X) :- man(X).
man(socrates). |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #PureBasic | PureBasic | ; Variables are initialized when they appear in sourcecode with default value of 0 and type int
Debug a
; or value "" for a string, they are not case sensitive
Debug b$
; This initializes a double precision float, if type is following the dot
Debug c.d
; They can be initialized with define (double precision float, string, integer)
Define d.d = 3.5, e$ = "Test", f.i = a + 2
; Define can have a default type (all bytes except j which is long):
Define.b g, h, j.l
; Define without following variables sets default type. In this case to single precision float
Define.f
; So this will be an single precision float and no integer
Debug k
; EnableExplicit forces declaration of used variables with define
EnableExplicit
; Will throw an error because L isn't initialized
Debug L
DisableExplicit
; Global Variables are available in Procedures and Threads too
Global M = 3, N = 2
Procedure Dummy(parameter1, parameter2 = 20)
; Parameter contain values which where used when calling the function,
; their types have to be specified in the above Procedure header.
; The last ones can have default values which get applied if this parameter is not given.
; Variables in Procedures are separate from those outside,
; so d can be initialized again with another type
; which would otherwise lead to an error
d.i
; Protected makes a variable local even if another one with same name is declared as global (see above)
Protected M = 2
; Shares a variable with main program like it was declared by global
Shared a
; prevents a variable to be initialized with default value again when procedure is called a second time,
; could be used for example as a counter, which contains the number of times a function was called
Static a
; N here also would have a value of 2, while for example
; f would, when named, initialize a new variable, and so have a value of 0
EndProcedure
; finally there are constants which are prefixed by an #:
#Test = 1
; Their value cannot be changed while program is running
#String_Constant = "blubb"
; In constrast to variables, a constant has no types except an (optional) $ sign to mark it as string constant
#Float_Constant = 2.3
; Maps, LinkedLists , Arrays and Structures are not handled here, because they are no elemental variables |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Modula-2 | Modula-2 | MODULE VectorProducts;
FROM RealStr IMPORT RealToStr;
FROM Terminal IMPORT WriteString,WriteLn,ReadChar;
PROCEDURE WriteReal(r : REAL);
VAR buf : ARRAY[0..31] OF CHAR;
BEGIN
RealToStr(r, buf);
WriteString(buf)
END WriteReal;
TYPE Vector = RECORD
a,b,c : REAL;
END;
PROCEDURE Dot(u,v : Vector) : REAL;
BEGIN
RETURN u.a * v.a
+ u.b * v.b
+ u.c * v.c
END Dot;
PROCEDURE Cross(u,v : Vector) : Vector;
BEGIN
RETURN Vector{
u.b*v.c - u.c*v.b,
u.c*v.a - u.a*v.c,
u.a*v.b - u.b*v.a
}
END Cross;
PROCEDURE ScalarTriple(u,v,w : Vector) : REAL;
BEGIN
RETURN Dot(u, Cross(v, w))
END ScalarTriple;
PROCEDURE VectorTriple(u,v,w : Vector) : Vector;
BEGIN
RETURN Cross(u, Cross(v, w))
END VectorTriple;
PROCEDURE WriteVector(v : Vector);
BEGIN
WriteString("<");
WriteReal(v.a);
WriteString(", ");
WriteReal(v.b);
WriteString(", ");
WriteReal(v.c);
WriteString(">")
END WriteVector;
VAR a,b,c : Vector;
BEGIN
a := Vector{3.0, 4.0, 5.0};
b := Vector{4.0, 3.0, 5.0};
c := Vector{-5.0, -12.0, -13.0};
WriteVector(a);
WriteString(" dot ");
WriteVector(b);
WriteString(" = ");
WriteReal(Dot(a,b));
WriteLn;
WriteVector(a);
WriteString(" cross ");
WriteVector(b);
WriteString(" = ");
WriteVector(Cross(a,b));
WriteLn;
WriteVector(a);
WriteString(" cross (");
WriteVector(b);
WriteString(" cross ");
WriteVector(c);
WriteString(") = ");
WriteVector(VectorTriple(a,b,c));
WriteLn;
ReadChar
END VectorProducts. |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #VBScript | VBScript | Function RegExTest(str,patrn)
Dim regEx
Set regEx = New RegExp
regEx.IgnoreCase = True
regEx.Pattern = patrn
RegExTest = regEx.Test(str)
End Function
Function URLDecode(sStr)
Dim str,code,a0
str=""
code=sStr
code=Replace(code,"+"," ")
While len(code)>0
If InStr(code,"%")>0 Then
str = str & Mid(code,1,InStr(code,"%")-1)
code = Mid(code,InStr(code,"%"))
a0 = UCase(Mid(code,2,1))
If a0="U" And RegExTest(code,"^%u[0-9A-F]{4}") Then
str = str & ChrW((Int("&H" & Mid(code,3,4))))
code = Mid(code,7)
ElseIf a0="E" And RegExTest(code,"^(%[0-9A-F]{2}){3}") Then
str = str & ChrW((Int("&H" & Mid(code,2,2)) And 15) * 4096 + (Int("&H" & Mid(code,5,2)) And 63) * 64 + (Int("&H" & Mid(code,8,2)) And 63))
code = Mid(code,10)
ElseIf a0>="C" And a0<="D" And RegExTest(code,"^(%[0-9A-F]{2}){2}") Then
str = str & ChrW((Int("&H" & Mid(code,2,2)) And 3) * 64 + (Int("&H" & Mid(code,5,2)) And 63))
code = Mid(code,7)
ElseIf (a0<="B" Or a0="F") And RegExTest(code,"^%[0-9A-F]{2}") Then
str = str & Chr(Int("&H" & Mid(code,2,2)))
code = Mid(code,4)
Else
str = str & "%"
code = Mid(code,2)
End If
Else
str = str & code
code = ""
End If
Wend
URLDecode = str
End Function
url = "http%3A%2F%2Ffoo%20bar%C3%A8%2F"
WScript.Echo "Encoded URL: " & url & vbCrLf &_
"Decoded URL: " & UrlDecode(url) |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Vlang | Vlang | import net.urllib
fn main() {
for escaped in [
"http%3A%2F%2Ffoo%20bar%2F",
"google.com/search?q=%60Abdu%27l-Bah%C3%A1",
] {
u := urllib.query_unescape(escaped)?
println(u)
}
} |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Objeck | Objeck |
use IO;
bundle Default {
class Hello {
function : Main(args : String[]) ~ Nil {
string := Console->GetInstance()->ReadString();
string->PrintLine();
number := Console->GetInstance()->ReadString()->ToInt();
number->PrintLine();
}
}
}
|
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #OCaml | OCaml | print_string "Enter a string: ";
let str = read_line () in
print_string "Enter an integer: ";
let num = read_int () in
Printf.printf "%s%d\n" str num |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Python | Python |
# these examples, respectively, refer to integer, float, boolean, and string objects
example1 = 3
example2 = 3.0
example3 = True
example4 = "hello"
# example1 now refers to a string object.
example1 = "goodbye"
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Quackery | Quackery | [ stack ] is mystack |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Nemerle | Nemerle | using System.Console;
module VectorProducts3d
{
Dot(x : int * int * int, y : int * int * int) : int
{
def (x1, x2, x3) = x;
def (y1, y2, y3) = y;
(x1 * y1) + (x2 * y2) + (x3 * y3)
}
Cross(x : int * int * int, y : int * int * int) : int * int * int
{
def (x1, x2, x3) = x;
def (y1, y2, y3) = y;
((x2 * y3 - x3 * y2), (x3 * y1 - x1 * y3), (x1 * y2 - x2 * y1))
}
ScalarTriple(a : int * int * int, b : int * int * int, c : int * int * int) : int
{
Dot(a, Cross(b, c))
}
VectorTriple(a : int * int * int, b : int * int * int, c : int * int * int) : int * int * int
{
Cross(a, Cross(b, c))
}
Main() : void
{
def a = (3, 4, 5); def b = (4, 3, 5); def c = (-5, -12, -13);
WriteLine(Dot(a, b)); WriteLine(Cross(a, b));
WriteLine(ScalarTriple(a, b, c));
WriteLine(VectorTriple(a, b, c));
}
} |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Wren | Wren | import "/fmt" for Conv
var urlDecode = Fn.new { |enc|
var res = ""
var i = 0
while (i < enc.count) {
var c = enc[i]
if (c == "\%") {
var b = Conv.atoi(enc[i+1..i+2], 16)
res = res + String.fromByte(b)
i = i + 3
} else {
res = res + c
i = i + 1
}
}
return res
}
// We need to escape % characters in Wren as % is otherwise used for string interpolation.
var encs = [
"http\%3A\%2F\%2Ffoo\%20bar\%2F",
"google.com/search?q=\%60Abdu\%27l-Bah\%C3\%A1"
]
for (enc in encs)System.print(urlDecode.call(enc)) |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Octave | Octave | % read a string ("s")
s = input("Enter a string: ", "s");
% read a GNU Octave expression, which is evaluated; e.g.
% 5/7 gives 0.71429
i = input("Enter an expression: ");
% parse the input for an integer
printf("Enter an integer: ");
ri = scanf("%d");
% show the values
disp(s);
disp(i);
disp(ri); |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #R | R | foo <- 3.4
bar = "abc" |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Racket | Racket |
#lang racket
;; define a variable and initialize it
(define foo 0)
;; increment it
(set! foo (add1 foo))
;; Racket is lexically scoped, which makes local variables work:
(define (bar)
(define foo 100)
(set! foo (add1 foo))
foo)
(bar) ; -> 101
;; and it also makes it possible to have variables with a global value
;; that are accessible only in a specific local lexical scope:
(define baz
(let () ; used to create a new scope
(define foo 0)
(define (bar)
(set! foo (add1 foo))
foo)
bar)) ; this is the value that gets bound to `baz'
(list (baz) (baz) (baz)) ; -> '(1 2 3)
;; define a new type, and initialize a variable with an instance
(struct pos (x y))
(define p (pos 1 2))
(list (pos-x p) (pos-y p)) ; -> '(1 2)
;; for a mutable reference, a struct (or some specific fields in a
;; struct) can be declared mutable
(struct mpos (x y) #:mutable)
(define mp (mpos 1 2))
(set-mpos-x! mp 11)
(set-mpos-y! mp 22)
(list (mpos-x mp) (mpos-y mp)) ; -> '(11 22)
;; but for just a mutable value, we have boxes as a builtin type
(define b (box 10))
(set-box! b (add1 (unbox b)))
(unbox b) ; -> 11
;; (Racket has many more related features: static typing in typed
;; racket, structs that are extensions of other structs,
;; pattern-matching on structs, classes, and much more)
|
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Never | Never | func printv(a[d] : float) -> int {
prints("[" + a[0] + ", " + a[1] + ", " + a[2] + "]\n");
0
}
func dot(a[d1] : float, b[d2] : float) -> float {
a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
}
func cross(a[d1] : float, b[d2] : float) -> [_] : float {
[ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ] : float
}
func scalar_triple(a[d1] : float, b[d2] : float, c[d3] : float) -> float {
dot(a, cross(b, c))
}
func vector_triple(a[d1] : float, b[d2] : float, c[d3] : float) -> [_] : float {
cross(a, cross(b, c))
}
func main() -> int {
var a = [ 3.0, 4.0, 5.0 ] : float;
var b = [ 4.0, 3.0, 5.0 ] : float;
var c = [ -5.0, -12.0, -13.0 ] : float;
printv(a);
printv(b);
printv(c);
printf(dot(a, b));
printv(cross(a, b));
printf(scalar_triple(a, b, c));
printv(vector_triple(a, b, c));
0
}
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #XPL0 | XPL0 | code Text=12;
string 0; \use zero-terminated strings
func Decode(S0); \Decode URL string and return its address
char S0;
char S1(80); \BEWARE: very temporary string space returned
int C, N, I, J;
[I:= 0; J:= 0;
repeat C:= S0(I); I:= I+1; \get char
if C=^% then \convert hex to char
[C:= S0(I); I:= I+1;
if C>=^a then C:= C & ~$20; \convert to uppercase
N:= C - (if C<=^9 then ^0 else ^A-10);
C:= S0(I); I:= I+1;
if C>=^a then C:= C & ~$20;
C:= N*16 + C - (if C<=^9 then ^0 else ^A-10);
];
S1(J):= C; J:= J+1; \put char in output string
until C=0;
return S1;
];
Text(0, Decode("http%3A%2F%2Ffoo%20bar%2f")) |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #Yabasic | Yabasic | sub decode_url$(s$)
local res$, ch$
while(s$ <> "")
ch$ = left$(s$, 1)
if ch$ = "%" then
ch$ = chr$(dec(mid$(s$, 2, 2)))
s$ = right$(s$, len(s$) - 3)
else
if ch$ = "+" ch$ = " "
s$ = right$(s$, len(s$) - 1)
endif
res$ = res$ + ch$
wend
return res$
end sub
print decode_url$("http%3A%2F%2Ffoo%20bar%2F")
print decode_url$("google.com/search?q=%60Abdu%27l-Bah%C3%A1") |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
The encoded string "google.com/search?q=%60Abdu%27l-Bah%C3%A1" should revert to the unencoded form "google.com/search?q=`Abdu'l-Bahá".
| #zkl | zkl | "http%3A%2F%2Ffoo%20bar%2F".pump(String, // push each char through these fcns:
fcn(c){ if(c=="%") return(Void.Read,2); return(Void.Skip,c) },// %-->read 2 chars else pass through
fcn(_,b,c){ (b+c).toInt(16).toChar() }) // "%" (ignored) "3"+"1"-->0x31-->"1" |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Oforth | Oforth | import: console
: testInput{
| s n |
System.Console askln ->s
while (System.Console askln asInteger dup ->n isNull) [ "Not an integer" println ]
System.Out "Received : " << s << " and " << n << cr ; |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Oz | Oz | declare
StdIn = {New class $ from Open.file Open.text end init(name:stdin)}
StringInput
Num = {NewCell 0}
in
{System.printInfo "Enter a string: "}
StringInput = {StdIn getS($)}
for until:@Num == 75000 do
{System.printInfo "Enter 75000: "}
Line = {StdIn getS($)}
in
Num := try {String.toInt Line} catch _ then 0 end
end |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Raku | Raku |
my @y = <A B C D>; # Array of strings 'A', 'B', 'C', and 'D'
say @y[2]; # the @-sigil requires the container to implement the role Positional
@y[1,2] = 'x','y'; # that's where subscripts and many other things come from
say @y; # OUTPUT«[A x y D]» # we start to count at 0 btw.
my $x = @y; # $x is now a reference for the array @y
say $x[1]; # prints 'x' followed by a newline character
my Int $with-type-check; # type checks are enforced by the compiler
my Int:D $defined-i = 10; # definedness can also be asked for and default values are required in that case
my Int:D $after-midnight where * > 24 = 25; # SQL is fun and so is Raku
my \bad = 'good'; # if you don't like sigils
say bad; # you don't have to use them
say "this is quite bad"; # but then string interpolation
say "this is quite {bad}" # becomes more wordy
|
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Nim | Nim | import strformat, strutils
type Vector3 = array[1..3, float]
proc `$`(a: Vector3): string =
result = "("
for x in a:
result.addSep(", ", 1)
result.add &"{x}"
result.add ')'
proc cross(a, b: Vector3): Vector3 =
result = [a[2]*b[3] - a[3]*b[2], a[3]*b[1] - a[1]*b[3], a[1]*b[2] - a[2]*b[1]]
proc dot(a, b: Vector3): float =
for i in a.low..a.high:
result += a[i] * b[i]
proc scalarTriple(a, b, c: Vector3): float = a.dot(b.cross(c))
proc vectorTriple(a, b, c: Vector3): Vector3 = a.cross(b.cross(c))
let
a = [3.0, 4.0, 5.0]
b = [4.0, 3.0, 5.0]
c = [-5.0, -12.0, -13.0]
echo &"a ⨯ b = {a.cross(b)}"
echo &"a . b = {a.dot(b)}"
echo &"a . (b ⨯ c) = {scalarTriple(a, b, c)}"
echo &"a ⨯ (b ⨯ c) = {vectorTriple(a, b, c)}" |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #PARI.2FGP | PARI/GP | s=input();
n=eval(input()); |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Pascal | Pascal | program UserInput(input, output);
var i : Integer;
s : String;
begin
write('Enter an integer: ');
readln(i);
write('Enter a string: ');
readln(s)
end. |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Rascal | Rascal | Type Name = Exp; |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #REXX | REXX | aa = 10 /*assigns chars 10 ───► AA */
bb = '' /*assigns a null value ───► BB */
cc = 2*10 /*assigns chars 20 ───► CC */
dd = 'Adam' /*assigns chars Adam ───► DD */
ee = "Adam" /*same as above ───► EE */
ff = 10. /*assigns chars 10. ───► FF */
gg = '10.' /*same as above ───► GG */
hh = "+10" /*assigns chars +10 ───► hh */
ii = 1e1 /*assigns chars 1e1 ───► ii */
jj = +.1e+2 /*assigns chars .1e+2 ───► jj */ |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would represent a point in the region, and a vector from the origin to the point.
Given the vectors:
A = (a1, a2, a3)
B = (b1, b2, b3)
C = (c1, c2, c3)
then the following common vector products are defined:
The dot product (a scalar quantity)
A • B = a1b1 + a2b2 + a3b3
The cross product (a vector quantity)
A x B = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
The scalar triple product (a scalar quantity)
A • (B x C)
The vector triple product (a vector quantity)
A x (B x C)
Task
Given the three vectors:
a = ( 3, 4, 5)
b = ( 4, 3, 5)
c = (-5, -12, -13)
Create a named function/subroutine/method to compute the dot product of two vectors.
Create a function to compute the cross product of two vectors.
Optionally create a function to compute the scalar triple product of three vectors.
Optionally create a function to compute the vector triple product of three vectors.
Compute and display: a • b
Compute and display: a x b
Compute and display: a • (b x c), the scalar triple product.
Compute and display: a x (b x c), the vector triple product.
References
A starting page on Wolfram MathWorld is Vector Multiplication .
Wikipedia dot product.
Wikipedia cross product.
Wikipedia triple product.
Related tasks
Dot product
Quaternion type
| #Objeck | Objeck | bundle Default {
class VectorProduct {
function : Main(args : String[]) ~ Nil {
a := Vector3D->New(3.0, 4.0, 5.0);
b := Vector3D->New(4.0, 3.0, 5.0);
c := Vector3D->New(-5.0, -12.0, -13.0);
a->Dot(b)->Print();
a->Cross(b)->Print();
a->ScaleTrip(b, c)->Print();
a->VectorTrip(b, c)->Print();
}
}
class Vector3D {
@a : Float;
@b : Float;
@c : Float;
New(a : Float, b : Float, c : Float) {
@a := a;
@b := b;
@c := c;
}
method : GetA() ~ Float {
return @a;
}
method : GetB() ~ Float {
return @b;
}
method : GetC() ~ Float {
return @c;
}
method : public : Dot(vec : Vector3D) ~ Float {
return @a * vec->GetA() + @b * vec->GetB() + @c * vec->GetC();
}
method : public : Cross(vec : Vector3D) ~ Vector3D {
newA := @b * vec->GetC() - @c * vec->GetB();
newB := @c * vec->GetA() - @a * vec->GetC();
newC := @a * vec->GetB() - @b * vec->GetA();
return Vector3D->New(newA, newB, newC);
}
method : public : ScaleTrip(vec_b: Vector3D, vec_c : Vector3D) ~ Float {
return Dot(vec_b->Cross(vec_c));
}
method : public : Print() ~ Nil {
IO.Console->Print('<')->Print(@a)->Print(" ,")
->Print(@b)->Print(", ")->Print(@c)->PrintLine('>');
}
method : public : VectorTrip(vec_b: Vector3D, vec_c : Vector3D) ~ Vector3D {
return Cross(vec_b->Cross(vec_c));
}
}
}
|
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Perl | Perl | print "Enter a string: ";
my $string = <>;
print "Enter an integer: ";
my $integer = <>; |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Phix | Phix | ?prompt_string("Enter any string:")
?prompt_number("Enter the number 75000:",{75000,75000})
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Ring | Ring |
<Variable Name> = <Value>
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Ruby | Ruby | $a_global_var = 5
class Demo
@@a_class_var = 6
A_CONSTANT = 8
def initialize
@an_instance_var = 7
end
def incr(a_local_var)
@an_instance_var += a_local_var
end
end |
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