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elmlang | general | A `Set a` is basically a `Dict a ()`, so it is really easy to implement using `assoc-list`.
I don't know if someone already published it. If not, publish it if you need it. | 2019-02-01T18:12:35.744800 | Velia |
elmlang | general | I literally copy/pasted the code for Set from elm/core and replaced all the Set_builtin with the `Set` from `type Set a = Set (Dict a ())` and it's all working? Should / can I post it to elm packages for others? | 2019-02-01T18:13:57.745000 | Buffy |
elmlang | general | Or just so I don't have to hold onto it in my repo? | 2019-02-01T18:14:11.745200 | Buffy |
elmlang | general | Or how does that work? | 2019-02-01T18:14:15.745400 | Buffy |
elmlang | general | I would add at least some notes in the README about the implementation based on `assoc-list` and the resulting performance. Also be sure to replace the `comparable` by `a`, else it's useless. At last the hardest part is finding a good name that can be found when searching a Set, this is the weak point of `assoc-list` in my opinion, it is not easy to find when searching a generic Dict. | 2019-02-01T18:18:53.745700 | Velia |
elmlang | general | assoc-set? | 2019-02-01T18:19:21.745900 | Buffy |
elmlang | general | You also have the dual issue of naming like the existing packages that use `key -> comparable` functions to get their 'any-ness' | 2019-02-01T18:20:10.746200 | Buffy |
elmlang | general | `assoc-set` is both easy to find when searching `set` and `assoc`, it's a good point. However its implementation does not really require an association at all, as the `()` is unused, so it is a little misleading. I don't know. | 2019-02-01T18:33:44.746600 | Velia |
elmlang | general | That's fair, I'm open to ideas :slightly_smiling_face: | 2019-02-01T18:34:10.746900 | Buffy |
elmlang | general | awesome-set? sets-are-cool? Hahaha | 2019-02-01T18:34:29.747200 | Buffy |
elmlang | general | omni-set? | 2019-02-01T18:34:38.747400 | Buffy |
elmlang | general | set-a | 2019-02-01T18:34:44.747600 | Buffy |
elmlang | general | I can't think of anything better unfortunately. Your call. | 2019-02-01T18:34:52.747800 | Velia |
elmlang | general | Well I'll publish and then if people don't like it I can change it :slightly_smiling_face: | 2019-02-01T18:35:13.748000 | Buffy |
elmlang | general | Haha! I published a package! <https://package.elm-lang.org/packages/erlandsona/assoc-set/latest/>
Okay okay I know I need to go update the docs and everything.
It's my first OS package, ever?! | 2019-02-01T18:59:39.748300 | Buffy |
elmlang | general | platform.program had no view function. is there an equivalent in 0.19's browser? | 2019-02-01T21:47:30.750200 | Rozanne |
elmlang | general | <https://package.elm-lang.org/packages/elm/core/latest/Platform#worker> | 2019-02-01T21:52:07.750400 | Earlean |
elmlang | general | thank you | 2019-02-01T22:09:38.750600 | Rozanne |
elmlang | general | <@Sau> I had the same issues with elm-format... add the `--unsafe-perms` flag. | 2019-02-02T00:33:59.751800 | Erin |
elmlang | general | eyy anyone know how Cmd race conditions work, if any? | 2019-02-02T01:59:46.752300 | Euna |
elmlang | general | like if I have a Nav.load and a Port to save, to localstorage, do they get executed sequentially? | 2019-02-02T02:00:39.753200 | Euna |
elmlang | general | <@Euna> `Cmd`s in a batch are unordered | 2019-02-02T02:01:10.753600 | Earlean |
elmlang | general | If you want to order them you need to explicitly order them by going through `update` | 2019-02-02T02:01:50.754100 | Earlean |
elmlang | general | ie. You have one `Cmd` produce a `Msg` and then have the next `Cmd` returned from the next `update` | 2019-02-02T02:02:41.754900 | Earlean |
elmlang | general | seen people at fosdem wearing elm shirts :slightly_smiling_face: | 2019-02-02T04:25:41.755700 | Desire |
elmlang | general | or well one so far | 2019-02-02T04:25:52.756000 | Desire |
elmlang | general | Question: How can I decode this JSON response from an API
```
query : {
search: {
[
0: { title: "xyz" },
1: {title: "elm"}, // and so on
]
}
```
I am trying `field "query" (field "search")`, but how do I decode a list of objects? | 2019-02-02T05:47:46.759800 | Lavada |
elmlang | general | Oops should post it in beginners channel | 2019-02-02T05:48:23.760200 | Lavada |
elmlang | general | <@Lavada> There's `list`: <https://package.elm-lang.org/packages/elm/json/latest/Json-Decode#list> | 2019-02-02T05:49:56.760900 | Hoa |
elmlang | general | Which decodes a list of "things". Basically you have to provide another decoder for each thing you are going to need | 2019-02-02T05:50:50.762000 | Hoa |
elmlang | general | Oh how far Elm has come! | 2019-02-02T07:24:48.762300 | Danika |
elmlang | general | Anyone have any luck manually decoding `target.selectedOption` for select `onChange`? | 2019-02-02T07:54:46.763300 | Ema |
elmlang | general | ```
onSelect : (Maybe ( String, String ) -> msg) -> Attribute msg
onSelect handler =
on "change" (Decode.map handler optionParser)
optionParser : Decode.Decoder (Maybe ( String, String ))
optionParser =
Decode.map
(List.head << Maybe.withDefault [] << Debug.log "option")
(Decode.maybe
(Decode.at [ "target", "selectedOptions" ] (Decode.list optionDecoder))
)
optionDecoder : Decode.Decoder ( String, String )
optionDecoder =
Decode.map2 (\t v -> ( t, v ))
(Decode.field "text" Decode.string)
(Decode.field "value" Decode.string)
``` | 2019-02-02T07:55:09.763600 | Ema |
elmlang | general | something like this - ignore all the maybes - that's just me trying to debug why it doesn't work. | 2019-02-02T07:55:36.764200 | Ema |
elmlang | general | Is the event elm gives us a faithful representation of the dom event or does it have some different structure? | 2019-02-02T07:58:08.765000 | Ema |
elmlang | general | It’s the same structure | 2019-02-02T08:01:05.765900 | Lea |
elmlang | general | So it seems to me that this part : | 2019-02-02T08:01:41.766600 | Ema |
elmlang | general | ```
(Decode.maybe
(<http://Decode.at|Decode.at> [ "target", "selectedOptions" ] (Decode.list optionDecoder))
)
``` | 2019-02-02T08:01:47.766800 | Ema |
elmlang | general | is giving me a `Nothing` | 2019-02-02T08:01:53.767100 | Ema |
elmlang | general | event if I change the optionDecoder to just spit out some dummy data. So very much appears like target.selectedOptions is the thing it doesn't like | 2019-02-02T08:02:51.768200 | Ema |
elmlang | general | This is about a `<select>` right? | 2019-02-02T08:06:52.769300 | Lea |
elmlang | general | correct | 2019-02-02T08:10:14.770800 | Ema |
elmlang | general | I can see the exact property I'm trying to dig out in the console but it doesn't seem to be coming through in the elm code, | 2019-02-02T08:10:44.771400 | Ema |
elmlang | general | <https://package.elm-lang.org/packages/elm-community/json-extra/4.0.0/Json-Decode-Extra#collection> | 2019-02-02T08:10:51.771600 | Huong |
elmlang | general | It's not a real array, so `Decode.list` doesn't like it | 2019-02-02T08:11:06.772000 | Huong |
elmlang | general | Ah - nasty! Thanks I'll give that a go. | 2019-02-02T08:11:43.772600 | Ema |
elmlang | general | <https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/selectedOptions> - whenever MDN says it's "a `HTMLCollection` object", it means `Decode.list` won't quite cut it. Silly Web API's :smile: | 2019-02-02T08:13:33.774000 | Huong |
elmlang | general | Hehehe. Never seen that `collection` before. Nice to know! | 2019-02-02T08:14:21.775100 | Hoa |
elmlang | general | You can also use `Tuple.pair` for `(\t v -> ( t, v ))` in the `optionDecoder` | 2019-02-02T08:14:59.775700 | Lea |
elmlang | general | shame I can't just do `(,)` but we won't open _that_ can of worms! Thanks all! | 2019-02-02T08:15:43.776300 | Ema |
elmlang | general | works a treat. Great. | 2019-02-02T08:21:10.776500 | Ema |
elmlang | general | Hey folks, could someone clue me in on how to update a package? | 2019-02-02T09:48:41.777100 | Rhonda |
elmlang | general | I tried by hand and then running elm make, but that tells me to change it back | 2019-02-02T09:48:55.777200 | Rhonda |
elmlang | general | And when I try elm install it tells me it’s already installed | 2019-02-02T09:49:05.777400 | Rhonda |
elmlang | general | But it’s not the latest version | 2019-02-02T09:49:15.777700 | Rhonda |
elmlang | general | Specifically I’m trying to upgrade `elm-graphql`. I’m on `1.1.0` but I see that the latest version is `4.2.0`. | 2019-02-02T09:52:54.777900 | Rhonda |
elmlang | general | Removing the package from `elm.json` and then re-installing only brings me to `1.3.0` | 2019-02-02T09:53:19.778100 | Rhonda |
elmlang | general | running `elm install` will install the latest version of a package that is compatible with all the packages currently listed in your elm.json file. | 2019-02-02T09:55:54.778300 | Earlean |
elmlang | general | Oh I see, so I probably have an incompatible package. I don’t suppose there’s a way to see which one(s)? | 2019-02-02T09:56:21.778600 | Rhonda |
elmlang | general | the Elm package program doesn't provide this information. But <https://www.markuslaire.com/github/elm-dependencies-analyzer/> is a good way to see this. | 2019-02-02T09:57:16.778900 | Earlean |
elmlang | general | Thanks! | 2019-02-02T09:58:16.779100 | Rhonda |
elmlang | general | I wrote an issue about having a blessed style guide (in particular the differing output of `elm-format` and the code in the official guide)- <https://github.com/evancz/guide.elm-lang.org/issues/189> . Any thoughts on it? | 2019-02-02T10:47:32.780500 | Luz |
elmlang | general | Sounds reasonable to me! | 2019-02-02T11:04:06.780600 | Jae |
elmlang | general | The previous answer Evan has given about why the core packages didn't follow elm-format was that he intended to start using elm-format once the style of elm-format settled. At the time there was a lot of changes to the elm-format style. But years later that reasoning probably no longer applies. | 2019-02-02T11:58:51.780800 | Earlean |
elmlang | general | There is a basic style guide that elm-format is based off. <https://elm-lang.org/docs/style-guide> | 2019-02-02T12:00:31.781000 | Earlean |
elmlang | general | Thanks for the background! I've linked to your comment in the issue <@Earlean> | 2019-02-02T12:26:58.781300 | Luz |
elmlang | general | has anyone here had use of the fact that `Set` doesn't require a `comparable` type argument all of the time? Like `Set.empty` can be of type `Set Never` or `Set (Maybe Int)`. <https://package.elm-lang.org/packages/elm/core/latest/Set> | 2019-02-02T16:08:26.783300 | Saran |
elmlang | general | There's no real use to it, it's mostly a stylistic choice to only have it on signatures that require that constraint | 2019-02-02T16:18:56.783400 | Huong |
elmlang | general | Fair. I accidentally used a non-comparable type when mocking out a module, which is why I asked. | 2019-02-02T16:20:10.783600 | Saran |
elmlang | general | Is there a way to Benchmark elm code? | 2019-02-02T18:24:18.784300 | Margie |
elmlang | general | You might want to check my approach with used on “change” for a select. It’s on github/rebelwarrior don’t have a link as I’m on mobile it’s the elm-doc-builder repo the file drop down builder. | 2019-02-02T18:31:38.787300 | Margie |
elmlang | general | There is this:
<https://package.elm-lang.org/packages/elm-explorations/benchmark/latest/> | 2019-02-02T18:44:34.787600 | Velia |
elmlang | general | Thank you, I’ve been trying to use it. The examples seem to be old and I haven’t been able to make it work. Have you used it successfully? | 2019-02-02T20:10:28.789100 | Margie |
elmlang | general | Does anyone have that website handy for searching Elm packages by type? The eq. to Hoogle? | 2019-02-02T21:05:38.790200 | Cherryl |
elmlang | general | Ah, found it. :slightly_smiling_face: <https://klaftertief.github.io/elm-search/> it’s linked on the package site, doh | 2019-02-02T21:06:46.790500 | Cherryl |
elmlang | general | I have an error “the function cannot handle the argument …” …
Argument is Foo A B
but the function expects
Foo a b.
This is strange to me, a function that expects a `Foo a b ` can accept a `Foo A B`, no?
I have a feeling the error message is misleading. Has anyone seen this? | 2019-02-02T23:00:56.792000 | Leoma |
elmlang | general | Was able to get it running by using Benchmark Runner but the documentation wasn’t too helpful. | 2019-02-02T23:04:45.793400 | Margie |
elmlang | general | <@Leoma> can you show the code? lowercase in type definition says it can accept any type of arguments but it can be false depends on you function body | 2019-02-02T23:11:21.794800 | Horace |
elmlang | general | for example if you using `A` in place of `a` argument - it definitely can’t be any type, but only `A`. | 2019-02-02T23:11:55.795400 | Horace |
elmlang | general | I can’t. Too much. I don’t have an SSCCE. | 2019-02-02T23:12:33.796000 | Leoma |
elmlang | general | But the type variables tell me this message doesn’t make sense. I should be looking elsewhere. I thought someone might have seen similar. | 2019-02-02T23:13:12.797300 | Leoma |
elmlang | general | So just error maybe? | 2019-02-02T23:13:18.797500 | Horace |
elmlang | general | Looks like loads of code I’ve written over the past 6 months based on a convention i use. But this time it fails. | 2019-02-02T23:14:59.799300 | Leoma |
elmlang | general | So it’s really not possible to say anything if you even don’t want to post error from compiler | 2019-02-02T23:16:20.799500 | Horace |
elmlang | general | Oh sorry! Ya.. I’ll post the error shortly. Away from desk. | 2019-02-02T23:24:46.800700 | Leoma |
elmlang | general | :thumbsup: | 2019-02-02T23:38:36.800900 | Horace |
elmlang | general | ```
TYPE MISMATCH
This function cannot handle the argument sent through the (|>) pipe:
...
The argument is:
ComponentResult.ComponentResult
BergView.Model
BergView.Msg
BergView.ExternalMsg
err
But (|>) is piping it a function that expects:
ComponentResult.ComponentResult BergView.Model msg externalMsg err
``` | 2019-02-03T00:54:30.801500 | Leoma |
elmlang | general | So… the function expects something more general?! How is that a problem? | 2019-02-03T00:54:46.801900 | Leoma |
elmlang | general | I mean, it’s most likely I have an issue with my code …. but this error message doesn’t seem helpful, does it? | 2019-02-03T00:55:57.802600 | Leoma |
elmlang | general | I'll be there this morning. (Sorry for the late notice :P) | 2019-02-03T01:14:49.802700 | Sharon |
elmlang | general | If could be that `msg` and `externalMsg` are constrained in that context | 2019-02-03T04:15:55.803800 | Huong |
elmlang | general | <@Leoma> hmm yeah I've seen that too. I was using a function that wanted a "toString" function as an argument, but since my data already was a list of strings, I just passed `identity`
it complained that `identity` was `a -> a`, while it should be `String -> String`
turns out there was an error somewhere else, but somehow it got confused | 2019-02-03T08:49:03.812100 | Nana |
elmlang | general | Thanks I will take a look. I got it working with the Json.Extra package but I'd be interested in other approaches | 2019-02-03T11:52:49.812500 | Ema |
elmlang | general | is there V.19 in the wild with support for Effect Managers? | 2019-02-03T13:13:04.813200 | Shelli |
elmlang | general | wierd type error happening for me | 2019-02-03T13:39:16.813500 | Mozella |
elmlang | general | ```
The 1st argument to `sandbox` is not what I expect:
31| main = Browser.sandbox { init = startingStatus, update = update, view = view }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This argument is a record of type:
{ init : Model, update : Model -> Model, view : Model -> Html Model }
But `sandbox` needs the 1st argument to be:
{ init : Model, update : Model -> Model, view : Model -> Html Model }
``` | 2019-02-03T13:39:20.813700 | Mozella |
elmlang | general | None | 2019-02-03T13:39:55.814000 | Mozella |
elmlang | general | here is the full file | 2019-02-03T13:40:03.814500 | Mozella |
elmlang | general | If you only want Html, you can do `main = p [] [ text (DependecyGraph.toString g) ]` - no need to set up a dummy program | 2019-02-03T13:40:56.815100 | Huong |
elmlang | general | im building from a dummy program to areal one | 2019-02-03T13:41:13.815800 | Mozella |
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