| # Nu map from imperative languages | |
| The idea behind this table is to help you understand how Nu built-ins and plugins relate to imperative languages. We've tried to produce a map of programming-relevant Nu commands and what their equivalents are in other languages. Contributions are welcome. | |
| Note: this table assumes Nu 0.43 or later. | |
| | Nushell | Python | Kotlin (Java) | C++ | Rust | | |
| | ------------ | ------------------------------------ | --------------------------------------------------- | ----------------------- | -------------------------------------------------- | | |
| | append | list.append, set.add | add | push_back, emplace_back | push, push_back | | |
| | math avg | statistics.mean | | | | | |
| | calc, = math | math operators | math operators | math operators | math operators | | |
| | count | len | size, length | length | len | | |
| | cp | shutil.copy | | | fs::copy | | |
| | date | datetime.date.today | java.time.LocalDate.now | | | | |
| | drop | list[:-3] | | | | | |
| | du | shutil.disk_usage | | | | | |
| | each | for | for | for | for | | |
| | exit | exit | System.exit, kotlin.system.exitProcess | exit | exit | | |
| | http get | urllib.request.urlopen | | | | | |
| | first | list[:x] | List[0], peek | vector[0], top | Vec[0] | | |
| | format | format | format | format | format! | | |
| | from | csv, json, sqlite3 | | | | | |
| | get | dict[\"key\"] | Map[\"key\"] | map[\"key\"] | HashMap["key"], get, entry | | |
| | group-by | itertools.groupby | groupBy | | group_by | | |
| | headers | keys | | | | | |
| | help | help | | | | | |
| | insert | dict[\"key\"] = val | | map.insert({ 20, 130 }) | map.insert(\"key\", val) | | |
| | is-empty | is None, is [] | isEmpty | empty | is_empty | | |
| | take | list[:x] | | | &Vec[..x] | | |
| | take until | itertools.takewhile | | | | | |
| | take while | itertools.takewhile | | | | | |
| | kill | os.kill | | | | | |
| | last | list[-x:] | | | &Vec[Vec.len()-1] | | |
| | lines | split, splitlines | split | views::split | split, split_whitespace, rsplit, lines | | |
| | ls | os.listdir | | | fs::read_dir | | |
| | match | match | when | | match | | |
| | merge | dict.append | | | map.extend | | |
| | mkdir | os.mkdir | | | fs::create_dir | | |
| | mv | shutil.move | | | fs::rename | | |
| | get | list[x] | List[x] | vector[x] | Vec[x] | | |
| | open | open | | | | | |
| | transpose | zip(\*matrix) | | | | | |
| | http post | urllib.request.urlopen | | | | | |
| | prepend | deque.appendleft | | | | | |
| | print | print | println | printf | println! | | |
| | ps | os.listdir('/proc') | | | | | |
| | pwd | os.getcwd | | | env::current_dir | | |
| | range | range | .., until, downTo, step | iota | .. | | |
| | reduce | functools.reduce | reduce | reduce | fold, rfold, scan | | |
| | reject | del | | | | | |
| | rename | dict[\"key2\"] = dict.pop(\"key\") | | | map.insert(\"key2\", map.remove(\"key\").unwrap()); | | |
| | reverse | reversed, list.reverse | reverse, reversed, asReversed | reverse | rev | | |
| | rm | os.remove | | | | | |
| | save | io.TextIOWrapper.write | | | | | |
| | select | {k:dict[k] for k in keys} | | | | | |
| | shuffle | random.shuffle | | | | | |
| | size | len | | | len | | |
| | skip | list[x:] | | | &Vec[x..],skip | | |
| | skip until | itertools.dropwhile | | | | | |
| | skip while | itertools.dropwhile | | | skip_while | | |
| | sort-by | sorted, list.sort | sortedBy, sortedWith, Arrays.sort, Collections.sort | sort | sort | | |
| | split row | str.split{,lines}, re.split | split | views::split | split | | |
| | str | str functions | String functions | string functions | &str, String functions | | |
| | str join | str.join | joinToString | | join | | |
| | str trim | strip, rstrip, lstrip | trim, trimStart, trimEnd | regex | trim, trim*{start,end}, strip*{suffix,prefix} | | |
| | sum | sum | sum | reduce | sum | | |
| | sys | sys | | | | | |
| | to | import csv, json, sqlite3 | | | | | |
| | touch | open(path, 'a').close() | | | | | |
| | uniq | set | Set | set | HashSet | | |
| | upsert | dict[\"key\"] = val | | | | | |
| | version | sys.version, sys.version_info | | | | | |
| | with-env | os.environ | | | | | |
| | where | filter | filter | filter | filter | | |
| | which | shutil.which | | | | | |
| | wrap | { "key" : val } | | | | | |