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clojurians | clojure | that's my point - I don't care about symbols - I want to parse maps and vectors and take everything else as strings | 2017-10-25T21:18:38.000200 | Clementina |
clojurians | clojure | write your own parser then | 2017-10-25T21:19:02.000299 | Rebeca |
clojurians | clojure | <https://github.com/Engelberg/instaparse> | 2017-10-25T21:19:12.000158 | Rebeca |
clojurians | clojure | look, the request wraps params like this,
```
{"customer-account-id" "f8f2b6b3-39b8-4e76-a9f0-fa4a65ee225a",
"filter" "{:date {:from nil, :to nil}, :search nil}",
"sort" "[:settled-at :desc]"}
```
on the server side I need to turn it into "normal' hash map
a) need to keywordize keys - that's easy
b) need to uwrap maps and vectors - what's the easiest way of doing that? | 2017-10-25T21:21:39.000028 | Clementina |
clojurians | clojure | I suspect you could `(try (let [v (edn/read-string s)] (if (or (vector? v) (map? v)) v s)) (catch Throwable _ s))` | 2017-10-25T21:23:30.000101 | Daniell |
clojurians | clojure | That would leave you with maps/vectors where the strings actually were EDN maps/vectors and leave you with the raw string everywhere else. | 2017-10-25T21:24:11.000016 | Daniell |
clojurians | clojure | yeah, that is entirely different then what you first described | 2017-10-25T21:24:13.000109 | Rebeca |
clojurians | clojure | that is well formed edn, strings are quoted, you can process it with edn/read-string then walk it making whatever changes you want | 2017-10-25T21:24:47.000064 | Rebeca |
clojurians | clojure | anyone have a go-to way of debouncing? in cljs i just use the google closure debounce fn, but i can't find anything for clj | 2017-10-25T21:39:42.000009 | Judy |
clojurians | clojure | I think I got slightly better idea.
```
(defn read-string*
"reads-string by parsing only maps, vectors, keywords and leaving everything else as-is.
Because `(type (clojure.edn/read-string \"foo\"))` => clojure.lang.Symbol"
[v]
(let [r (s/conform (s/or :r map? :r vector? :r keyword?) (read-string v))]
(if (= r ::s/invalid) v (second r))))
``` | 2017-10-25T21:52:50.000103 | Clementina |
clojurians | clojure | Bear in mind that if `read-string` throws an exception, you won't get back the original string -- in case `v` is not valid EDN. | 2017-10-25T22:14:41.000144 | Daniell |
clojurians | clojure | daammmn... | 2017-10-25T22:15:47.000025 | Clementina |
clojurians | clojure | Never got a fix unfortunately :disappointed: | 2017-10-26T00:47:22.000030 | Leota |
clojurians | clojure | even after downgrading leiningen? | 2017-10-26T09:25:30.000651 | Candace |
clojurians | clojure | haven’t tried that yet | 2017-10-26T09:41:02.000154 | Leota |
clojurians | clojure | i recommend trying it… `lein downgrade 2.6.1` i think works | 2017-10-26T09:42:36.000771 | Candace |
clojurians | clojure | that solved the leing ring issue for me at least | 2017-10-26T09:42:43.000298 | Candace |
clojurians | clojure | Yeah, problem is I have lein instlled through brew | 2017-10-26T09:54:01.000477 | Leota |
clojurians | clojure | and have no idea how to downgrade then :smile: | 2017-10-26T09:54:07.000802 | Leota |
clojurians | clojure | yeah, downgrading fixed the issue | 2017-10-26T10:03:53.000089 | Leota |
clojurians | clojure | thanks :slightly_smiling_face: | 2017-10-26T10:03:55.000084 | Leota |
clojurians | clojure | is it an unofficial law in clojure that the first argument, if possible, be a collection? in order that things work nicely with swap!, update, update-in | 2017-10-26T11:15:02.000648 | Berry |
clojurians | clojure | first in some contexts, last in others | 2017-10-26T11:21:55.000263 | Myles |
clojurians | clojure | map/filter et al have it last | 2017-10-26T11:22:10.000540 | Myles |
clojurians | clojure | <@Berry> Rich answered this here <https://groups.google.com/forum/#!topic/clojure/iyyNyWs53dc> | 2017-10-26T11:25:56.000153 | Evan |
clojurians | clojure | ah, so it's "seq functions take seq last; collection funcs take collection first" ? | 2017-10-26T11:30:25.000044 | Berry |
clojurians | clojure | that'd explain the filter/map case too | 2017-10-26T11:30:34.000082 | Berry |
clojurians | clojure | I tend to almost always order my arguments from least to most variable | 2017-10-26T11:31:09.000336 | Hugo |
clojurians | clojure | why does that make sense given: 1. clojure doesn't have nice partial application and 2. ppl generally optimzie for ->, ->>, update, swap, ... | 2017-10-26T11:32:05.000042 | Berry |
clojurians | clojure | i `partial` a lot | 2017-10-26T11:32:19.000554 | Willow |
clojurians | clojure | I’m that weirdo that really like `partial` but mostly it’s just because I can keep track of my args cognitively easily with that heuristic | 2017-10-26T11:32:37.000605 | Hugo |
clojurians | clojure | weird; I don't think there's a single partial code in my code, I tend to use #(... %1 ... ), maybe I need to learn how to use 'partial' in clojure | 2017-10-26T11:33:13.000183 | Berry |
clojurians | clojure | For whatever reason my visual parser hangs on that literal lambda syntax. I’ll always either reach for partial or fn unless I’m writing throwaway | 2017-10-26T11:34:51.000792 | Hugo |
clojurians | clojure | ```
update-display (partial display-error-in-zone errorzone)
show-user (comp update-display alert-box auth/unify-response)
```
from a let binding. Then i can just call `show-user` on all of the callbacks. I unify the repsonses, turn them into the alert box map required and then update-display | 2017-10-26T11:41:11.000074 | Willow |
clojurians | clojure | Did anyone bring `re-natal` with hot reloading to run? It all seems to work except the hot reloading | 2017-10-26T12:33:36.000481 | Jon |
clojurians | clojure | <@Jon> you need to disable the hot reloading feature in the react-native devtools; figwheel comes with its own hot reloading | 2017-10-26T12:57:32.000604 | Fe |
clojurians | clojure | all the RN packager sees is a stub that includes the JS requires; figwheel does the rest | 2017-10-26T12:58:01.000359 | Fe |
clojurians | clojure | <@Fe> ah alright, i’ll give it a try, thanks! I’m using intellij now and i’m not quite sure with what command i best start it. With the `react-native` task? Thats the only one which opens the app in my simulator. | 2017-10-26T12:59:02.000266 | Jon |
clojurians | clojure | <https://github.com/drapanjanas/re-natal#development-with-figwheel> | 2017-10-26T12:59:44.000073 | Fe |
clojurians | clojure | `lein figwheel` and `react-native run-ios` or `... run-android` should do the job | 2017-10-26T13:00:14.000438 | Fe |
clojurians | clojure | Hmm since i’m working with intellij tasks and not the command line - i guess i’ll have to run both tasks - a leiningen task and a react-native one | 2017-10-26T13:00:37.000644 | Jon |
clojurians | clojure | don't forget to run `re-natal use-figwheel` once before that | 2017-10-26T13:00:41.000576 | Fe |
clojurians | clojure | forget about intellij for a minute and do it from the command line | 2017-10-26T13:01:01.000032 | Fe |
clojurians | clojure | you can build shortcuts for your IDE when you know it works | 2017-10-26T13:01:19.000609 | Fe |
clojurians | clojure | an IDE is only sugar for the command line | 2017-10-26T13:01:43.000880 | Fe |
clojurians | clojure | <@Fe> That i know, i’m usually more of a command line guy :slightly_smiling_face: | 2017-10-26T13:02:04.000393 | Jon |
clojurians | clojure | I’ll give it a try | 2017-10-26T13:02:09.000565 | Jon |
clojurians | clojure | intellij will work fine as an editor though | 2017-10-26T13:03:42.000540 | Fe |
clojurians | clojure | You should look at Spacemacs. <http://spacemacs.org> — Terminal based or GUI. But powerfull. --end of commercials-- | 2017-10-26T13:05:27.000476 | Olen |
clojurians | clojure | <@Olen> I just moved to intellij from spacemacs - for the good for that everyone working on the coming project can use the same environment | 2017-10-26T13:09:12.000242 | Jon |
clojurians | clojure | We will have people which are not able to handle emacs right | 2017-10-26T13:09:21.000076 | Jon |
clojurians | clojure | But thanks for the ad :smile: | 2017-10-26T13:09:30.000314 | Jon |
clojurians | clojure | No problem. :sunglasses: | 2017-10-26T13:09:43.000230 | Olen |
clojurians | clojure | Sorry for these guys, BTW. | 2017-10-26T13:09:59.000011 | Olen |
clojurians | clojure | Well, older people have a hard time to learn a very new environment with less GUI than they are used to :smile: but yea, emacs is great | 2017-10-26T13:11:00.000154 | Jon |
clojurians | clojure | awesome!!! | 2017-10-26T13:12:27.000073 | Candace |
clojurians | clojure | great news :slightly_smiling_face: | 2017-10-26T13:12:29.000470 | Candace |
clojurians | clojure | Emacs is older than me. Maybe, older than you too. March 20, 1985 It’s birtdate. But, no problem if you return us back. Your real home. :joy: | 2017-10-26T13:13:02.000119 | Olen |
clojurians | clojure | Good luck with your project. | 2017-10-26T13:13:46.000207 | Olen |
clojurians | clojure | <@Olen> Thanks :slightly_smiling_face: | 2017-10-26T13:13:53.000606 | Jon |
clojurians | clojure | >>> The original EMACS was written in 1976 by David A. Moon and Guy L. Steele Jr. as a set of Editor MACroS for the TECO editor. | 2017-10-26T13:14:44.000357 | Fe |
clojurians | clojure | I’m very new to the clojure environment, so i hope i won’t struggle too much. I want to take a go with react-native and fulcro. Hope I won’t run into too many problems :smile: | 2017-10-26T13:14:49.000245 | Jon |
clojurians | clojure | OMG. Sorry, my fault. | 2017-10-26T13:15:03.000632 | Olen |
clojurians | clojure | Hey, hot-reload works! :smile: bit slow, but it works! | 2017-10-26T13:18:44.000130 | Jon |
clojurians | clojure | <@Fe> thank you :slightly_smiling_face: | 2017-10-26T13:18:56.000723 | Jon |
clojurians | clojure | np | 2017-10-26T13:19:23.000501 | Fe |
clojurians | clojure | emacs was the first real program to use windows - which is why emacs terminology for windows and frames and such is totally different from all the apps that came later (and closer to how windows actually work in the real world) | 2017-10-26T13:47:11.000238 | Margaret |
clojurians | clojure | <#C099W16KZ|emacs> is probably a better place for this discussion | 2017-10-26T13:58:38.000623 | Mia |
clojurians | clojure | I have a piece of clojure data, representing hiccup.
I need to go through the hiccup, andechange every ocurance of:
:on-click :foo1 ==> :on-click (get kw->func-map :foo1)
:on-click :handler2 ==> :on-click (get kw-func-map :handler2)
Is there a standard way to do this ? | 2017-10-26T14:21:17.000683 | Berry |
clojurians | clojure | this is the best I have so far:
```
(def kw->func {})
(def sample-data
[:div
[:svg {:on-click :foobar}]])
(defn conv-function [x]
(if (and (map? x)
(:on-click x))
(assoc x :on-click [:lookup (:on-click x)])
x))
(clojure.walk/postwalk conv-function sample-data)
``` | 2017-10-26T14:30:27.000359 | Berry |
clojurians | clojure | <@Berry> I understand if the `map?` check is there for clarity, but it’s redundant - `:on-click` will only return non-nil if it can be looked up (I guess there’s a corner case of sets, but there’s nothing in hiccup that knows what to do with a set containing a keyword that I know of) | 2017-10-26T14:53:33.000470 | Margaret |
clojurians | clojure | also, for that general flavor of thing I have when-pred `(defn when-pred [p? x] (when (p? x) x))` | 2017-10-26T14:55:06.000374 | Margaret |
clojurians | clojure | (:on-click (when-pred map? x)) | 2017-10-26T14:55:30.000018 | Margaret |
clojurians | clojure | good call on the map? // I may keep it for stylistic reasons as a "type sig" of "this is a map", but I agree with you that it's redundant | 2017-10-26T14:56:12.000430 | Berry |
clojurians | clojure | <@Berry> you can do that transformation much more precisely and efficiently with specter | 2017-10-26T15:00:13.000822 | Owen |
clojurians | clojure | <@Owen>: I agree. The problem I have with specter is that: 1. I can implement postwalk from scratch [so I understand it] 2. to this day, I haven't managed to implement a mini-specter from scratch, so it's still very magical to me | 2017-10-26T15:01:50.000674 | Berry |
clojurians | clojure | <@Berry> did you look at <https://github.com/nathanmarz/basic-specter> ? | 2017-10-26T15:03:06.000495 | Owen |
clojurians | clojure | that's basically the original implementation without any of the optimizations that came later | 2017-10-26T15:03:55.000525 | Owen |
clojurians | clojure | <@Owen>: not until now; 30 lines is impressive; will look into it | 2017-10-26T15:04:02.000414 | Berry |
clojurians | clojure | essentially still how it works, especially transformation | 2017-10-26T15:04:13.000141 | Owen |
clojurians | clojure | what are the complex transforms that makes it faster (and this version slower) ? | 2017-10-26T15:04:52.000140 | Berry |
clojurians | clojure | the transform implementations are still the same for the most part | 2017-10-26T15:05:31.000546 | Owen |
clojurians | clojure | `ALL` uses protocols to dispatch on each type, and esp. for maps uses a different implementation per map type | 2017-10-26T15:05:53.000559 | Owen |
clojurians | clojure | and then there's the inline compilation / caching system that removes most of the navigator composition overhead | 2017-10-26T15:07:27.000647 | Owen |
clojurians | clojure | that stuff doesn't matter when it comes to what's actually going on when you do transform – basic-specter captures that aspect | 2017-10-26T15:08:16.000055 | Owen |
clojurians | clojure | right, I realize it doesn't change semnatics, I'm just curious what issues you ran into and how you overcame them | 2017-10-26T15:09:07.000657 | Berry |
clojurians | clojure | the inline compilation / caching stuff was extremely hard, optimizing the individual navigators was just a lot of digging into esoteric details of Clojure | 2017-10-26T15:10:48.000274 | Owen |
clojurians | clojure | `ALL`, `MAP-VALS`, `MAP-KEYS` were the most work to optimize | 2017-10-26T15:11:33.000364 | Owen |
clojurians | clojure | when specter outperforms idiomatic clojure code it's usually due to those navigators | 2017-10-26T15:12:07.000405 | Owen |
clojurians | clojure | I'm seeing a weird problem with reading the new namespaced maps in a repl. I get this error in both a bare `lein repl` and `boot repl`:
```
user=> (defn foo []
#:a{:b 1})
#_=> #'user/foo
user=> (defn foo []
#:a{:b 1}
)
#_=>
user=> java.lang.RuntimeException: EOF while reading, starting at line 1
clojure.lang.LispReader$ReaderException: java.lang.RuntimeException: EOF while reading, starting at line 1
java.lang.RuntimeException: Unmatched delimiter: )
clojure.lang.LispReader$ReaderException: java.lang.RuntimeException: Unmatched delimiter: )
``` | 2017-10-26T16:02:15.000124 | Shaunda |
clojurians | clojure | it's the same exact code except the second version has a newline after the namespaced map. Can I bother someone else to try this code in their repl and see what they get? I'm on clojure 1.9.0-beta3 | 2017-10-26T16:03:48.000257 | Shaunda |
clojurians | clojure | I would like to try it in a bare (non lein/boot) clojure repl, but I'm on ubuntu and the installer only works for macos right now | 2017-10-26T16:04:29.000377 | Shaunda |
clojurians | clojure | ok, so I tracked ^this down to being a problem with how the text is being read from the terminal | 2017-10-26T16:18:05.000454 | Shaunda |
clojurians | clojure | it’s in the reply / nrepl layer right? | 2017-10-26T17:00:46.000137 | Margaret |
clojurians | clojure | you can use a bare repl by downloading the jar and running it with java, you don’t need deps to reproduce | 2017-10-26T17:01:12.000534 | Margaret |
clojurians | clojure | (oh - wait - the latest jars need deps, never mind) | 2017-10-26T17:01:23.000340 | Margaret |
clojurians | clojure | yeah <@Margaret> I just followed the new instructions to get a bare clojure repl on linux and I do not see the problem there, only in lein/boot | 2017-10-26T17:02:19.000117 | Shaunda |
clojurians | clojure | you can also make a project with only clojure.core as a dep and no code, and make and run an uberjar | 2017-10-26T17:02:25.000386 | Margaret |
clojurians | clojure | or `lein trampoline repl` | 2017-10-26T17:02:31.000425 | Margaret |
clojurians | clojure | so either in the reply/nrepl layer or it's a terminal thing? | 2017-10-26T17:03:34.000123 | Shaunda |
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