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elmlang | general | My guess is that the color codes it uses happen to coincide with the background color in your shell.. I'm not sure what the best course of action is! | 2019-03-28T17:26:47.061000 | Huong |
elmlang | general | <@Huong> thank you for taking the time to help me! | 2019-03-28T17:28:22.061400 | Kent |
elmlang | general | <@Kent> you can try `elm repl --no-colors`, if my guess is right and this is because of the colors colliding, that should help :slightly_smiling_face: | 2019-03-28T17:34:23.062200 | Huong |
elmlang | general | :bow: thank you sir! | 2019-03-28T17:35:43.062600 | Kent |
elmlang | general | :fireworks: | 2019-03-28T17:35:52.062900 | Kent |
elmlang | general | If my Browser.element doesnt use any flags, what type should I put for flags? | 2019-03-28T18:30:06.063500 | Broderick |
elmlang | general | `()` | 2019-03-28T18:31:03.063900 | Chae |
elmlang | general | <@Chae> Ahh, forgot about that unit.. thanks! | 2019-03-28T18:31:32.064500 | Broderick |
elmlang | general | If I subscribe to onAnimatinoFrame, but my app is slow, what happens to the missing frame messages? Is there a backlog of frames? | 2019-03-28T20:00:54.066400 | Lindsey |
elmlang | general | Recently, in learning elm, I have encountered a difficult problem in how to change the URL of the page to achieve the goal of reloading. Can anyone recommend a learning route? | 2019-03-29T03:33:54.067000 | Carrie |
elmlang | general | I would start with <https://package.elm-lang.org/packages/elm/browser/latest/Browser#application> and then read the linked examples. Also make sure to read <https://guide.elm-lang.org/webapps/navigation.html> | 2019-03-29T03:43:48.067100 | Jin |
elmlang | general | there's no backlog | 2019-03-29T03:53:50.067300 | Nana |
elmlang | general | if your app is slow, the framerate will be lower, so fewer onAnimationFrame events will be dispatched | 2019-03-29T03:54:53.067500 | Nana |
elmlang | general | thank you very much | 2019-03-29T03:57:32.067700 | Carrie |
elmlang | general | I read this code "( Model key url, Cmd.none )" .It means how to operate the Model? | 2019-03-29T04:59:38.068000 | Carrie |
elmlang | general | `(Model, Cmd Msg)` is usually the return type of the `init` and `update` function in an Elm application. The `Cmd Msg` is an opaque thing to tell the Elm runtime about side-effects it should do. A `Msg` value will be passed to the `update` function to return a new `Model`. | 2019-03-29T05:02:58.068200 | Jin |
elmlang | general | I've noticed that multiline strings cause any compiler error messages in the same file to appear on the wrong line. Is this a known bug? | 2019-03-29T05:45:30.069900 | Jae |
elmlang | general | Maybe this one <https://github.com/elm/compiler/issues/1900> | 2019-03-29T06:04:35.070100 | Lea |
elmlang | general | Yep, that's the bug. Thanks | 2019-03-29T06:05:29.070300 | Jae |
elmlang | general | What do you good people use/recommend for backend server + DB? | 2019-03-29T10:54:04.072200 | Jana |
elmlang | general | Flask (Python), with mypy if you want static type checking, and PostgreSQL | 2019-03-29T11:19:55.075100 | Leonardo |
elmlang | general | <@Jana> depends on your needs / previous experience really. Anything should be fine from Ruby to Python to Haskell to Java to Go to Rust to Elixir. Obviously there's a certain familiarity if it's Haskell... :slightly_smiling_face: | 2019-03-29T11:19:57.075300 | Corinne |
elmlang | general | PureScript :smile: | 2019-03-29T11:38:12.076600 | Niesha |
elmlang | general | What are you building? | 2019-03-29T11:46:40.076800 | Shenita |
elmlang | general | I’m starting a new app “Logger”. So far I’ve been using Elixir/Phoenix, and am quite happy with that combo (though I miss the types). Curious if there is something else that would be better. | 2019-03-29T11:48:50.077000 | Jana |
elmlang | general | Yeah, I’m in a similar boat of wanting something functional for server but with static types (so not elixir) and better tooling than haskell | 2019-03-29T11:56:51.077300 | Shenita |
elmlang | general | @sam literally the reason we're using PureScript. | 2019-03-29T11:57:22.077500 | Niesha |
elmlang | general | I think maybe ocaml could fit that gap? But I’ve never tried it | 2019-03-29T11:57:24.077700 | Shenita |
elmlang | general | ah okay, how is the interop with node packages though? | 2019-03-29T11:58:22.077900 | Shenita |
elmlang | general | We're using an express server | 2019-03-29T11:58:45.078100 | Niesha |
elmlang | general | Works, but you gotta write the FFI yourself. | 2019-03-29T11:58:55.078300 | Niesha |
elmlang | general | Using flow with js before you lose all type safety as soon as you pull in an untyped module | 2019-03-29T11:59:02.078500 | Shenita |
elmlang | general | PureScript doesn't allow for untyped code. Gotta type all FFI | 2019-03-29T11:59:18.078700 | Niesha |
elmlang | general | ah okay, that’s probably better than having `any` everywhere | 2019-03-29T12:00:05.078900 | Shenita |
elmlang | general | might give it a try next time I get to make that choice :smile: | 2019-03-29T12:00:30.079100 | Shenita |
elmlang | general | Rust has Elm-like typing. | 2019-03-29T12:06:32.083100 | Dede |
elmlang | general | I am using Rust and Postgresql. | 2019-03-29T12:06:36.083400 | Dede |
elmlang | general | Hey guys, I'm brand new to using Elm and I'm currently trying to make a game. What I'm trying to accomplish right now is to have a specific element removed from a list, so I experimented with different list functions in the REPL. Ill do something like , x = [1,2,3,4,5]
x.filter isEven
and then get an error " you gave me a list number, I need a record with a remove field". Im probably making a dumb mistake but I'm not sure what to do. | 2019-03-29T12:06:56.083800 | Nikia |
elmlang | general | Rust has several good webserver options. | 2019-03-29T12:07:06.084000 | Dede |
elmlang | general | You probably want
`List.filter isEven x` | 2019-03-29T12:07:46.084200 | Dede |
elmlang | general | In some contexts it might be clearer to write
```
x |> List.filter isEven
|> nextTransformation
|> nextTransformation
``` | 2019-03-29T12:08:16.084400 | Dede |
elmlang | general | Core point, though, is that Elm doesn't attach operations to data. You have to explicitly call functions. | 2019-03-29T12:08:48.084700 | Dede |
elmlang | general | So `List.filter` calls the `filter` function defined in the `List` module. | 2019-03-29T12:09:00.085100 | Dede |
elmlang | general | <@Nikia> So, you're trying to chain stuff like `myValue.method args` - but in Elm it happens through function application: `fn args myValue` etc. | 2019-03-29T12:09:26.085800 | Florencia |
elmlang | general | ahhh I see, that helps a lot! | 2019-03-29T12:09:58.086300 | Nikia |
elmlang | general | even if `myValue` is a List, you can't use `List.filter` like `myValue.filter foo` | 2019-03-29T12:09:59.086500 | Florencia |
elmlang | general | Thanks everyone! Makes sense now | 2019-03-29T12:10:10.086800 | Nikia |
elmlang | general | Hello! I seem to remember a discussion about a tool that can extract tests from doc comments, similar to how it works in Elixir. Is there a tool like this or did I dream it up? | 2019-03-29T13:01:04.088600 | Dorsey |
elmlang | general | <@Dorsey> Probably this :slightly_smiling_face: <https://github.com/stoeffel/elm-verify-examples> | 2019-03-29T13:01:28.088800 | Florencia |
elmlang | general | Nice. Thanks <@Florencia>! Do you have any experience with it? | 2019-03-29T13:03:03.089400 | Dorsey |
elmlang | general | Is it good? | 2019-03-29T13:03:08.089600 | Dorsey |
elmlang | general | Yeah, it's great :slightly_smiling_face: | 2019-03-29T13:03:24.089900 | Florencia |
elmlang | general | I use it to make sure the examples in documentation of my packages are actually correct. Note that this isn't meant to replace regular tests, but rather as a verification of correctness of examples :slightly_smiling_face: | 2019-03-29T13:04:31.091100 | Huong |
elmlang | general | Yeah, I know. But it looks like a great complementary. | 2019-03-29T13:05:03.091900 | Dorsey |
elmlang | general | Oh absolutely. It's just easy to forgo writing actual tests, and before you know it, you're writing examples that test edge-case behaviour :smile: | 2019-03-29T13:06:02.093000 | Huong |
elmlang | general | I have to remind myself that the examples are just that: examples. I can verify their correctness. To check that they code they demonstrate is correct, I (should) write actual tests | 2019-03-29T13:06:52.094600 | Huong |
elmlang | general | I suppose for edge-cases fuze tests are great. I had a lot of fun writing them lately! | 2019-03-29T13:07:21.095500 | Dorsey |
elmlang | general | Oh yeah, always fun :smile: | 2019-03-29T13:07:44.096200 | Huong |
elmlang | general | i just found this out. is it corect to consider this should produce a compile error?
```
import E.P.B as SPrice exposing (BPrice)
import E.P.S as SPrice exposing (SPrice)
```
note i have `SPrice` twice and i have no compilation error. Can this be considered a bug? Since is a mistake. the correct version should be:
```
import E.P.B as BPrice exposing (BPrice)
import E.P.S as SPrice exposing (SPrice)
```
I was hoping elm compiler helps me here. Thought to ask people before creating an issue. | 2019-03-29T13:09:10.097600 | Yang |
elmlang | general | I think it's intended and I like it a lot. | 2019-03-29T13:09:36.097900 | Dorsey |
elmlang | general | It's not a problem because the exposed values don't collide | 2019-03-29T13:09:46.098500 | Florencia |
elmlang | general | if they did, Elm compiler would tell you | 2019-03-29T13:09:53.099000 | Florencia |
elmlang | general | (instead of just picking one, which would be :scream: ) | 2019-03-29T13:10:07.099500 | Florencia |
elmlang | general | What I often do is ```
import Maybe
import Maybe.Extra as Maybe
Maybe.or a b
``` | 2019-03-29T13:10:22.099800 | Dorsey |
elmlang | general | yup! | 2019-03-29T13:11:19.100500 | Florencia |
elmlang | general | I suppose as soon as you try to use `BPrice.funcFromBPrice` elm will throw an error | 2019-03-29T13:11:23.100700 | Shenita |
elmlang | general | (sidenote: it only yells when you try to use a colliding value) | 2019-03-29T13:11:27.100900 | Huong |
elmlang | general | possibly a confusing error but there will be one :slightly_smiling_face: | 2019-03-29T13:11:44.101300 | Shenita |
elmlang | general | oh, the error should be pretty good | 2019-03-29T13:12:36.101800 | Huong |
elmlang | general | ```This usage of `H.class` is ambiguous.
36| [ button [ H.class "hi", onClick Increment ] [ text "+1" ]
^^^^^^^
It could refer to a variable from either of these imports:
import Html.Attributes as H
import Svg.Attributes as H
``` that sort of stuff | 2019-03-29T13:12:48.102300 | Huong |
elmlang | general | <@Dorsey> thats interesting. didnt think to use maybe extra. Maybe i should. would be wired if `Maybe.iShould` is an actual function :smile: | 2019-03-29T13:13:23.102900 | Yang |
elmlang | general | Ha ha :laughing: | 2019-03-29T13:13:59.103600 | Dorsey |
elmlang | general | It's in `Maybe.Extra.Extra`. | 2019-03-29T13:14:19.103900 | Dorsey |
elmlang | general | Hi everyone, I have this function here which is returning the error:
The (::) operator can only add elements onto lists.
32| (x::xs) -> if x == fruit then xs else x :: removeOne xs
^^^^^^^^^^^^
This `removeOne` call produces:
List Fruit -> List Fruit
But (::) needs a List on the right.
My objective is to write a function that searches for a "fruit" in the list and removes it if it is found. | 2019-03-29T15:55:24.106600 | Nikia |
elmlang | general | `removeOne` expects two arguments but you're only giving it one in the recursive call | 2019-03-29T15:58:21.107400 | Lashawnda |
elmlang | general | try `if x == fruit then xs else x :: removeOne fruit xs` | 2019-03-29T15:58:56.108100 | Lashawnda |
elmlang | general | Thanks a lot Luke! | 2019-03-29T16:24:19.108900 | Nikia |
elmlang | general | You’re welcome. Whenever I see `_ needs a _ on the right/left` errors I always look for an arrow in what the call produces. Usually the compiler can tell when you forgot an argument to a function but there are a couple cases like this one where it can’t | 2019-03-29T16:43:26.111200 | Lashawnda |
elmlang | general | Hi all, I have this list:
```[ A, B, X, X, A, D, D, D, A, B, X, A, C, C, A, A, B, B, B, B, B ]```
and I want to transform it into:
```[ [A, B], [X], [X], [A, D, D, D], [A, B], [X], [A, C, C], [A], [A, B, B, B, B, B] ]```
Is the recursive function with two arguments (like: `fn : List a -> List (List a) -> List (List a)`) the way to go, or is there an easier way? | 2019-03-29T17:16:04.114100 | Izola |
elmlang | general | Have a look at groupWhile from the list extra package | 2019-03-29T17:22:30.114600 | Kris |
elmlang | general | Thanks, I'll check it out | 2019-03-29T17:24:46.114800 | Izola |
elmlang | general | Thanks all for your suggestions! | 2019-03-29T18:53:04.115200 | Jana |
elmlang | general | hey everyone! follow elm-conf on instagram for extremely good posts related to this year's upcoming elm-conf <https://www.instagram.com/stories/elmconf/> | 2019-03-29T21:34:23.116000 | Lashawnda |
elmlang | general | Hey! I was just about to start off with my first Elm projects that uses WebSockets. I just wanted to know whether `elm-lang/websocket` would work with `0.19`. | 2019-03-29T22:31:02.117400 | Florentina |
elmlang | general | <@Florentina> it doesn't work with 0.19. you need to use ports instead | 2019-03-29T22:32:54.118200 | Earlean |
elmlang | general | <https://package.elm-lang.org/packages/billstclair/elm-websocket-client/latest/> is a package that makes using ports for websockets a bit easier. | 2019-03-29T22:33:26.119100 | Earlean |
elmlang | general | I see. Thanks for the quick reply! :slightly_smiling_face: | 2019-03-29T22:33:50.119500 | Florentina |
elmlang | general | If you want something that's more like Elm with better tooling than haskell why not try F#? You can do class-oriented but you don't need to. Have a look at what SAFE does server side (giraffe+saturn+Elmish) <https://safe-stack.github.io/docs/intro/> | 2019-03-30T05:08:33.119600 | Denae |
elmlang | general | + postgres obviously ^.^ | 2019-03-30T05:09:22.120000 | Denae |
elmlang | general | I am starting an iOS/Android project that accesses a local SQLite database and I would like to use Elm. Is this feasible? What would be the best tool to use with it (Capacitor/Cordova/React Native)? | 2019-03-30T06:24:01.127300 | Mireya |
elmlang | general | <@Hsiu> may have something to say about it :slightly_smiling_face: | 2019-03-30T06:24:46.127600 | Lynne |
elmlang | general | <@Mireya> I use plain xcode and android studio.. just open a fullscreen webview and does the rest in elm.. native code can easily be called with ports.. | 2019-03-30T06:36:26.129600 | Monnie |
elmlang | general | I’m not sure I would call it “easy”. Are you saying I can go directly from Elm to Swift/Java and back with ports? Is there a tutorial on that? | 2019-03-30T07:23:45.132400 | Mireya |
elmlang | general | You need an incoming/outgoing port set up in Elm, native ios/android can send messages to elm directly, but you will need to add a small function in javascript to forward messages from elm to native.... after that you just add messages on swift and elm side when you need more functionallity.. Searching for javascript interop Wkwebview or android webview should give your some guides.. its pretty slimilar... An example for IOS: <https://medium.com/@JillevdWeerd/creating-links-between-wkwebview-and-native-code-8e998889b503> | 2019-03-30T07:29:06.132600 | Monnie |
elmlang | general | Using ports to native swift/java code is actually pretty similar as interop between elm and javascript. | 2019-03-30T07:39:13.132900 | Monnie |
elmlang | general | My current application is augmented reality.. So I show the camera nativly fullscreen and load a transparent webview on top of the video.. the rest of the userinterface/overlay is done in elm. | 2019-03-30T07:41:08.133100 | Monnie |
elmlang | general | Hey everyone, I am currently trying to create an app where a certain key in the dictionary has an updated value upon clicking. I am almost sure that I have more than a couple problems with my current code. But right now I am getting an error with my init function. This is the error : I was not expecting this equals sign while parsing an expression (in
parentheses) in init's definition.
15| init flags url = ( fruits={ Apple : 0 , Grapes : 0 } , Cmd.none ) -- add init model
Im pretty stuck and some guidance would help. Thanks! | 2019-03-30T15:25:36.134000 | Nikia |
elmlang | general | First, your `Dict` is missing the types it uses for key and value. After that is done, the other issues can be solved, I am happy to assist if necessary. :slightly_smiling_face: | 2019-03-30T15:30:08.134700 | Timika |
elmlang | general | `type alias Model = { fruits : Dict }` From what I can guess from the code is, that you want to store fruit quantities? Sadly, you cannot use custom types for the key, as your keys have to be `comparable`, so we need to find a different solution there. If the amount of different fruits is not too large and does not change often, you can just use a record instead. | 2019-03-30T15:31:24.135400 | Timika |
elmlang | general | yes exactly, I changed it to fruits : Dict Fruits Int
However, I'm still getting the same error. | 2019-03-30T15:32:31.136100 | Nikia |
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