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elmlang | general | essentially you're after: `(a -> b) -> (Maybe a -> a) -> (Maybe b -> b)` | 2019-04-10T00:01:10.972600 | Ruthann |
elmlang | general | so first i'd solve the simpler problem: `(a -> b) -> ( a -> a ) -> ( b -> b)` | 2019-04-10T00:01:49.973700 | Ruthann |
elmlang | general | which i don't know if you can... | 2019-04-10T00:02:09.973900 | Ruthann |
elmlang | general | <@Earlean> I don't think I have default planned for that - if I had some message that did nothing would that solve the issue? | 2019-04-10T00:02:37.974600 | Kenny |
elmlang | general | if you take the output `(b -> b)`, you'll need something that did `(b -> a)` at a minimum | 2019-04-10T00:03:12.975500 | Ruthann |
elmlang | general | <@Kenny> You probably want to return a `Maybe` in that case | 2019-04-10T00:03:27.975800 | Earlean |
elmlang | general | you could even have your build script replace it automatically :smile: | 2019-04-10T03:13:35.976600 | Nana |
elmlang | general | You can just use a single codebase and multiple entry points into that codebase. You don’t need to make your life harder by splitting the code into multiple repositories or multiple folders. | 2019-04-10T03:29:25.976900 | Maida |
elmlang | general | compiling each entry point will give you optimized bundles with only what is needed to run the functionality that the entry point implements. | 2019-04-10T03:31:42.977100 | Maida |
elmlang | general | So, instead of having one `Main.elm` you will have `PublicMain.elm` and `PrivateMain.elm` altho, 14kLOC is rather small. I would expect that your gzipped minified bundle is probably bellow 100kb | 2019-04-10T03:36:09.977300 | Maida |
elmlang | general | Is there such a possibility? I pass a JS object to the elm file and can use the method of JS object in the elm file | 2019-04-10T03:55:39.977600 | Carrie |
elmlang | general | <@Carrie> no | 2019-04-10T04:04:00.977800 | Nana |
elmlang | general | Oh, I see. | 2019-04-10T04:06:56.978100 | Carrie |
elmlang | general | you can read values like Numbers and Strings though
if you want to call a JS function you have to use ports | 2019-04-10T04:08:16.979000 | Nana |
elmlang | general | Yes, I just want to use a JS function in elm, but there are too few cases on <https://guide.elm-lang.org/interop/ports.html>. I can't find the way I want to use it. | 2019-04-10T04:19:24.979500 | Carrie |
elmlang | general | here's a basic example I made
<https://ellie-app.com/4RDRLzDsrFDa1>
it's a JS function that waits 1 sec and then returns whatever you sent it | 2019-04-10T04:20:54.980100 | Nana |
elmlang | general | Thanks very much | 2019-04-10T04:24:34.980300 | Carrie |
elmlang | general | That's great, it's the first time I see a useful usage of never/Never | 2019-04-10T04:52:45.980700 | Syble |
elmlang | general | So I’m watching Luke’s talk about custom elements and Elm here: <https://dev.to/lukewestby/talk-when-and-how-to-use-web-components-with-elm-f85> If I understand correctly I can use the same technique to wrap a straight HTML element with `contenteditable=true` into a custom element? From what I read `contenteditable` is starting to be usable for very simply in place editing. Anybody has experience in that regard ? | 2019-04-10T06:25:34.984300 | Hoa |
elmlang | general | Basically the custom element allows Elm VDOM not to be confused by the changes happening in the content editable element. | 2019-04-10T06:26:39.985500 | Hoa |
elmlang | general | what kind of editing are you planning on though? Surely it'll be easier to use any existing rich editor. | 2019-04-10T06:40:19.985600 | Nana |
elmlang | general | and if it's plain text, a textarea should be more reliable, plus no need for a web component | 2019-04-10T06:41:21.985800 | Nana |
elmlang | general | I am writing my own editor and using custom element + contenteditable | 2019-04-10T06:52:39.986300 | Lynne |
elmlang | general | So far, so good, though handling selection is a pain <@Hoa> | 2019-04-10T06:52:56.986700 | Lynne |
elmlang | general | but why? :stuck_out_tongue: | 2019-04-10T06:54:14.986800 | Nana |
elmlang | general | because why not? | 2019-04-10T06:54:33.987000 | Lynne |
elmlang | general | I am adding additional logic and DOM elements to the text, so textarea is not suitable by definition | 2019-04-10T06:55:17.987200 | Lynne |
elmlang | general | just since there's already so many editors to choose from | 2019-04-10T07:05:07.987400 | Nana |
elmlang | general | Well, I am not writing yet another WYSIWIG editor and not really sure why you are questioning what I am doing | 2019-04-10T07:07:45.987600 | Lynne |
elmlang | general | You have zero information about my needs | 2019-04-10T07:08:07.987900 | Lynne |
elmlang | general | hey, I have a question regarding elm-live and proxy prefixes | 2019-04-10T07:09:06.988900 | Kiana |
elmlang | general | sorry heh :sweat_smile: | 2019-04-10T07:09:25.989200 | Nana |
elmlang | general | I need to have to proxy prefixes defined (one for the REST API, and one for the /login endpoint) | 2019-04-10T07:09:44.989800 | Kiana |
elmlang | general | but I can't get it to work | 2019-04-10T07:09:52.990100 | Kiana |
elmlang | general | is there a way to do that? wildcard support or something? | 2019-04-10T07:10:04.990500 | Kiana |
elmlang | general | <@Kiana> I have no experience with `elm-live` myself but the docs mention `-x` and `-y` cmd args. Did you try them? | 2019-04-10T07:21:59.991300 | Lynne |
elmlang | general | <https://github.com/wking-io/elm-serve/blob/master/lib/elm-reload-server.js#L41>
It seems wildcards are not supported (because it is just using `String.startsWith` to test if an URL should be proxied) | 2019-04-10T07:28:52.992100 | Lynne |
elmlang | general | Anyone know of a date/time library that can get the week number from a Time.Posix? | 2019-04-10T07:29:04.992400 | Gertrude |
elmlang | general | `justinmimbs/date` | 2019-04-10T07:29:26.992600 | Lynne |
elmlang | general | I found 2 Elm example of SPA (<https://github.com/rtfeldman/elm-spa-example> and this one : <https://github.com/levelhq/level/tree/master/assets/elm>), do you know any other? | 2019-04-10T07:57:03.994600 | Ismael |
elmlang | general | <https://github.com/ohanhi/elm-shared-state> | 2019-04-10T08:02:07.994800 | Allyn |
elmlang | general | Nice, thanks | 2019-04-10T08:04:53.994900 | Ismael |
elmlang | general | You’re welcome. This one is simpler than <https://github.com/rtfeldman/elm-spa-example>, and the principle is documented. | 2019-04-10T08:06:26.995100 | Allyn |
elmlang | general | I see that <https://github.com/NoRedInk/elm-assets-loader> is deprecated. What do you suggest using for handling assets in Webpack / Elm? | 2019-04-10T08:11:59.996100 | Mimi |
elmlang | general | I often have a central Log module where log.debug serves that purpose. Then I only need to swap one item, if needed. Most often, I end up weighing whether to log them to a service or not, which I think is a good prompt. | 2019-04-10T08:13:54.996200 | Dane |
elmlang | general | Days ago I was watching this: <https://www.youtube.com/watch?time_continue=63&v=TWAMr72VaaU> and wondering how to tackle that in Elm. At least the editor part, let’s set aside the Elm block evaluation for now. So to me it seems there’s two kind of editors here: a simple block-level editor where basically let’s you do simple inline formatting (bold, Italics, link) and the code (Elm) editor part - which could really implemented with CodeMirror custom element. One could argue to use CodeMirror for both block types. Just evaluating possibilities here. The overall environment can be quite easily done with Elm. I have the the basics already written. Consider this as a project to test out Elm on a real-world UI with some no obvious challenges :slightly_smiling_face: | 2019-04-10T08:30:16.996400 | Hoa |
elmlang | general | <@Lynne> yes, I've tried those, the problem is that I have two paths that need to be proxied, and share no common prefix | 2019-04-10T08:36:42.997300 | Kiana |
elmlang | general | I've solved it by actually changing the paths | 2019-04-10T08:36:59.997700 | Kiana |
elmlang | general | hey <@Millie> I ended up using a list with a generator for the supported characters (I wanted to generate strings which were both non-empty and only had certain characters), using `Fuzz.list`and `Random` | 2019-04-10T08:45:59.997900 | Vilma |
elmlang | general | Here’s my evolving take on the SPA genre: <https://github.com/jhbrown94/experimental-elm-spa-skeleton/> | 2019-04-10T09:08:05.998100 | Dede |
elmlang | general | What is your opinion about it? | 2019-04-10T09:26:57.998500 | Kent |
elmlang | general | sorry, my text is missing... | 2019-04-10T09:27:27.998900 | Kent |
elmlang | general | The compiler reports that the title function actually has two parameters, but from the way that I am used to reading the function type definition I initially assumed one (i.e. text), but could not understand Elm processed the second (i.e. schema). Is it technically correct to state the following: Elm expands (?) the function signature from [String -> BaseSchemaProperty extras] to
[String -> BaseSchema extras -> BaseSchema extras] at compilation time? Can you help me clarify my confusion. | 2019-04-10T09:27:46.999100 | Kent |
elmlang | general | Nice, I like the example on how to redirect to login when not authenticated | 2019-04-10T09:31:07.999200 | Ismael |
elmlang | general | From what I’ve read from the docs `type alias` are expanded at compilation time. That’s why you can’t define a type alias in term of itself, compiler would end up with a infinite recursion | 2019-04-10T09:37:20.001100 | Hoa |
elmlang | general | So I believe you are correct in your assumption: the function signature gets expanded and gains a parameter | 2019-04-10T09:38:49.002400 | Hoa |
elmlang | general | Regardless of type alias expansion, consider currying. Whenever you write `add : Int -> Int -> Int`, that's the exact same thing as writing `add : Int -> (Int -> Int)`, though you can still write `add a b` as the function head | 2019-04-10T09:42:43.004300 | Huong |
elmlang | general | How did you get Slack to format your snippet as Elm? :slightly_smiling_face: | 2019-04-10T09:45:15.004400 | Timika |
elmlang | general | I told it was Haskell...using the + button Code or Snippet | 2019-04-10T09:46:50.004800 | Kent |
elmlang | general | ...elm and Haskell look similar | 2019-04-10T09:47:27.005000 | Kent |
elmlang | general | Ah, I mistook the “Elm snippet” as actual, real Elm highlighting. But it was the name you gave it. :slightly_smiling_face: | 2019-04-10T09:48:01.005200 | Timika |
elmlang | general | I almost got a bit excited that Slack acknowledged Elm :slightly_smiling_face: | 2019-04-10T09:48:20.005400 | Timika |
elmlang | general | I use `style-loader` during development and `mini-css-extract-plugin` for prod build. Plus `html-webpack-plugin` which bakes everything into an HTML page | 2019-04-10T09:59:36.005600 | Lynne |
elmlang | general | I’ll check that thanks! | 2019-04-10T10:03:36.005800 | Mimi |
elmlang | general | maybe something like Slatejs for the text blocks and CodeMirror for the code | 2019-04-10T10:22:21.006100 | Nana |
elmlang | general | At the moment, it won't properly update the URL when that redirect happens. I'll fix that eventually but it's not the most critical thing on the list :wink: | 2019-04-10T10:23:04.006300 | Dede |
elmlang | general | or if you want to get really fancy, Monaco, the editor part of VSCode, is available as a package :smile: | 2019-04-10T10:23:08.006500 | Nana |
elmlang | general | <https://microsoft.github.io/monaco-editor/index.html> | 2019-04-10T10:23:56.006800 | Nana |
elmlang | general | presumably it'd be possible to use the VSCode Elm plugin with it, probably a lot of work though | 2019-04-10T10:24:51.007000 | Nana |
elmlang | general | Didn’t know Monaco. It is indeed a possibility :slightly_smiling_face: | 2019-04-10T10:49:55.007500 | Hoa |
elmlang | general | Hey Sergey, I'm still not sure how you reference images from inside the elm app. Could you please elaborate a bit more? | 2019-04-10T14:04:28.008100 | Mimi |
elmlang | general | ~I mean do you have any mechanism to fingerprint the images? Or do you reference them without any added digest to the filename~ Opened a thread in Discourse <https://discourse.elm-lang.org/t/assets-fingerprinting-with-webpack-and-elm/3466> (edited) | 2019-04-10T14:37:13.008700 | Mimi |
elmlang | general | ~I guess I should have added that I'd like the images to be fingerprinted (<https://elmlang.slack.com/archives/C0CJ3SBBM/p1554898319996100>)~ Opened a thread in Discourse <https://discourse.elm-lang.org/t/assets-fingerprinting-with-webpack-and-elm/3466> | 2019-04-10T14:37:17.008900 | Mimi |
elmlang | general | we wrote a webpack plugin that looks in our compiled JS for image paths and rewrites them to `/path/to/img.ext?<the hash>` | 2019-04-10T16:43:29.010400 | Alicia |
elmlang | general | I have an issue that is more on the algorithmic side: given a list which contains a variable nr of numbers `list = [ 1, 2, -4, 10]` i want to be able to solve the following system of 2 equations by algorithm. I can do this on paper but i dont know how to do it in elm.
```
x0 + 1 = x1 + 2 = x2 - 4 = x3 + 10
x0 + x1 + x2 + x3 = 0
```
the api i imagine being something like:
solve [ 1, 2 -4, 10 ] == [ x0, x1, x2, x3 ]
I don't know the actual solutions, since this is a made up example.. but in the resulting list - i want to have the corresponding solutions in the proper order.
note the term `x0 + 1` is formed from the first element of the given list. So 1 and x0 are related - x0 being the first in the resulting list.
I'm quite confused about how to approach this problem. how to even represent something like x0 in elm? Any insights into how to approach this? Thanks :slightly_smiling_face: | 2019-04-10T17:02:59.019800 | Yang |
elmlang | general | <@Yang> don't know about the equation but couldn't that just be a function like `List Float -> List Float` ? | 2019-04-10T17:08:23.020900 | Nana |
elmlang | general | yep.
`solve: List Float -> List Float `
or
`solve: List Rational -> List Rational`
I plan to move floats to rationals and back if i observe precision problems. | 2019-04-10T17:12:25.023500 | Yang |
elmlang | general | hang on :thinking_face: wouldn't the solution always just be that xN is the inverse? | 2019-04-10T17:12:27.023600 | Nana |
elmlang | general | not sure what you mean at this point | 2019-04-10T17:13:11.024000 | Yang |
elmlang | general | or wait nvm :sweat_smile: | 2019-04-10T17:15:08.025300 | Nana |
elmlang | general | let me take a look again. something is fishy here :)) | 2019-04-10T17:15:19.025600 | Yang |
elmlang | general | You’re looking for solving a system of equations, it looks like | 2019-04-10T17:15:42.026300 | Kris |
elmlang | general | <https://en.m.wikipedia.org/wiki/Gaussian_elimination> is the standard way. | 2019-04-10T17:15:50.026600 | Kris |
elmlang | general | yep, the issue is that to create the adjency matrix.. i need to organize this x0, x1.. and get their coefficients. But that process alone is something i don't know how to approach. How to get to the coefficients part? How i would know that x0 has coeficient 1? or 10? on paper is easy.. you can see the coeficients. Here in elm i dont know how to even sum it up. | 2019-04-10T17:18:45.030000 | Yang |
elmlang | general | Variable size matrices are a pain to work with in elm though. | 2019-04-10T17:18:46.030100 | Kris |
elmlang | general | Do you need to parse the equation from plain text? That _is_ a pain | 2019-04-10T17:19:43.031100 | Kris |
elmlang | general | no actually. this is part of a system i am building.. and if i find the solutions .. i have what i need to move forward. I derived that equation form the system constraints. Is not text based. | 2019-04-10T17:21:58.033200 | Yang |
elmlang | general | Really interesting question and answer:
"Is it possible to write a package where you can construct a `Decoder a` and a function `a -> Encode.Value` all at once, without having to repeat yourself when specifying the JSON structure?"
<https://www.reddit.com/r/elm/comments/bbk6hb/interesting_puzzle_elm_decoders_and_encoders/?utm_medium=android_app&utm_source=share> | 2019-04-10T17:31:27.034500 | Velia |
elmlang | general | got an idea. Gonna try to represent it in elm as: `type Var = Var Index (Maybe Float)` Where `Var 1 Nothing` is x1 and is unsolved. | 2019-04-10T17:31:31.034800 | Yang |
elmlang | general | <@Velia> those are known as bidirectional parsers | 2019-04-10T17:40:13.036000 | Kris |
elmlang | general | Thanks for the pointer :+1: | 2019-04-10T17:41:08.036200 | Velia |
elmlang | general | A package exists that does this but it hasn’t been upgraded to 0.19 <https://package.elm-lang.org/packages/jamesmacaulay/elm-json-bidirectional/latest/> | 2019-04-10T17:56:00.036700 | Jae |
elmlang | general | Oh nice, never noticed it. Thanks! | 2019-04-10T17:56:59.036900 | Velia |
elmlang | general | <https://gist.github.com/miniBill/cf1698087a9dacaf7c49c60d972ecdf2> | 2019-04-10T17:57:16.037100 | Raylene |
elmlang | general | My module works for 0.19 | 2019-04-10T17:57:27.037300 | Raylene |
elmlang | general | Is it that useful in practice once you are used to them from your experience? | 2019-04-10T17:57:47.037500 | Velia |
elmlang | general | <@Raylene> yes it's cool, that's what started the discussion: <https://elmlang.slack.com/archives/C0CJ3SBBM/p1554931887034500> | 2019-04-10T17:59:34.037700 | Velia |
elmlang | general | Yeah, the package Martin linked is very similar. Mine also has support for ADTs tho (something I haven't found elsewhere).
The key insight was that to support them you need to ask the user for a destructor (for example a destructor for `Result x y` is `(x->a) -> (y->a) -> Result x y -> a`) | 2019-04-10T18:03:16.038000 | Raylene |
elmlang | general | And the types sometimes get gnarly in the implementation (again, in particular for ADTs), but it's one of those "it compiles it works" areas.
I'm particularly proud of the `recursive` method signature | 2019-04-10T18:05:48.038200 | Raylene |
elmlang | general | Also, the same method can generate CRUD forms and type descriptions, but it does require yet another destructor (identical to the first, but Elm lacks hkp) | 2019-04-10T18:09:00.038600 | Raylene |
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