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elmlang | general | I do not see Time Travel Debugger. Is there any way to activate that? | 2019-04-18T11:13:00.401600 | Phoebe |
elmlang | general | ~It's not available in 0.19~ (edited: see discussion below around 1:18pm) | 2019-04-18T11:13:21.401800 | Dede |
elmlang | general | :open_mouth: is it going to appear anytime soon? | 2019-04-18T11:13:52.402200 | Phoebe |
elmlang | general | AFAIK there's no timeline for.. well, anything, in core Elm. It will happen when it happens. Welcome to life with a 0.x environment :slightly_smiling_face: | 2019-04-18T11:17:37.402900 | Dede |
elmlang | general | It's worth noting that building with -debug is generally risky/broken right now. If you see a `map!` haskell error, remove the debug flag and try again. (You can still use `Debug.log` and friends, though.) | 2019-04-18T11:24:06.403700 | Dede |
elmlang | general | Is anyone using the Web Crypto API? I’m not satisfied with the available crypto libraries in elm, especially since they support hardly any algorithms, and not the ones I need. | 2019-04-18T11:26:13.405900 | Isaiah |
elmlang | general | Writing crypto libraries in elm is also painfully difficult because of a lack of binary datatypes, unsigned int8, and no ability to mutate if necessary (like for hashing thousands of iterations) | 2019-04-18T11:28:23.408500 | Isaiah |
elmlang | general | Thanks for the tip. What tool sdo you use to profile that ? | 2019-04-18T11:55:42.409300 | Caron |
elmlang | general | <@Phoebe> the current debugger is a time traveling debugger. You can navigate back in time by clicking the messages. There are some issues with the current version but I’m hoping that `0.19.1` will fix them. | 2019-04-18T13:18:01.411400 | Maida |
elmlang | general | also, keepi in mind that the original time traveling debugger was from a moment in time when Elm did not have http calls. Any kind of side-effects (http calls) do not play well with the debugger BUT it works wonderful for regular updates caused by user interaction. | 2019-04-18T13:20:28.413500 | Maida |
elmlang | general | Wait, does the current debugger actually restore state when you click the old messages? I apologize for my wrong answer. | 2019-04-18T13:20:58.414100 | Dede |
elmlang | general | yes | 2019-04-18T13:29:20.414500 | Isaiah |
elmlang | general | Is there any documentation available for elm reactor? | 2019-04-18T14:26:16.414900 | Monte |
elmlang | general | I need a custom index.html and can't find how to make it work with 0.19 | 2019-04-18T14:27:31.415500 | Monte |
elmlang | general | Elm reactor just serves straight from elm files. If you need a custom index.html you may be able to view it as a file but more likely need a web server. | 2019-04-18T14:28:20.416700 | Dede |
elmlang | general | `npm install -g http-server` can get you a long way. | 2019-04-18T14:29:00.417800 | Dede |
elmlang | general | There used to be a way to serve custom html, <https://blog.ilias.xyz/elm-reactor-and-custom-html-9e7143553807>
Has that feature been removed? | 2019-04-18T14:29:13.418200 | Monte |
elmlang | general | Parcel or elm-live is probably easier though :smile: | 2019-04-18T14:29:39.419100 | Nana |
elmlang | general | Right, I had forgotten about elm-live | 2019-04-18T14:29:54.419300 | Monte |
elmlang | general | `http-server` just runs at the command line in the directory you want to serve. I think it’s pretty easy. | 2019-04-18T14:30:46.420700 | Dede |
elmlang | general | <@Dede> it's not what I need. | 2019-04-18T14:31:50.421000 | Monte |
elmlang | general | what is the difference between `>>` and `|>`? Are these two snippets the same?
```
Task.map Success
>> Task.onError (Failure >> Task.succeed)
Task.map Success
|> Task.onError (Task.succeed Failure)
``` | 2019-04-18T14:39:09.421900 | Vilma |
elmlang | general | <@Vilma> no, they are different | 2019-04-18T14:39:47.422400 | Monte |
elmlang | general | `|>` takes a value and sends it to a function | 2019-04-18T14:40:07.422800 | Monte |
elmlang | general | `>>` composes two functions together | 2019-04-18T14:40:14.423200 | Monte |
elmlang | general | `"A B C" |> String.split " " |> List.map (\letter -> letter ++ letter)` | 2019-04-18T14:41:04.424100 | Monte |
elmlang | general | `"A B C" |> (String.split " " >> List.map (\letter -> letter ++ letter))` | 2019-04-18T14:41:48.424500 | Monte |
elmlang | general | both do the same thing, but the first passes a value first to a function (`String.split " "`), then passes the result to `List.map ...` | 2019-04-18T14:42:51.425500 | Monte |
elmlang | general | The second instead, passes the value to the function resulting from the composition of `String.split " "` and `List.map (\letter -> letter ++ letter)` | 2019-04-18T14:43:48.426400 | Monte |
elmlang | general | In practice `>>` is not used as often as `|>` | 2019-04-18T14:44:28.427100 | Monte |
elmlang | general | I think I understand | 2019-04-18T14:44:46.427300 | Vilma |
elmlang | general | `|>` takes a value and a function, and produces a value
`>>` takes two functions and produces a function | 2019-04-18T14:45:12.428300 | Monte |
elmlang | general | `|>` makes it sequential, while `>>` is like the mathematics (calculus, I think) of doing `g(f(x))` and then allowing us to pass a parameter to this function which is the combination of `f(x)` and `g(x)` | 2019-04-18T14:45:43.428900 | Vilma |
elmlang | general | `a |> f` is literally `f a` | 2019-04-18T14:58:13.429300 | Kris |
elmlang | general | and `g << f = \x -> g (f x)` | 2019-04-18T14:58:25.429600 | Kris |
elmlang | general | `elm: Map.!: given key is not an element in the map` anyone got a tip? | 2019-04-18T16:18:48.430400 | Margo |
elmlang | general | known compiler bug | 2019-04-18T16:19:12.430600 | Kris |
elmlang | general | I think you have to remove your elm-stuff dir/not compile with --debug | 2019-04-18T16:19:30.431100 | Kris |
elmlang | general | OK, ill try. Thanks | 2019-04-18T16:21:23.431400 | Margo |
elmlang | general | Im using Parcel and just deleted elm-suff and ran parcel build (not sure what parcel does...). That did not help | 2019-04-18T16:33:13.432400 | Margo |
elmlang | general | Make sure you're running with Parcel 1.10 since it doesn't use the `--debug` flag | 2019-04-18T16:35:04.433100 | Carman |
elmlang | general | OK | 2019-04-18T16:35:30.433500 | Margo |
elmlang | general | BTW Parcel is a build manager. It compiles your Elm, handles assets, environment variables, etc for you. It's like Webpack but with no config needed. It also comes with a live-reload server. | 2019-04-18T16:36:27.434400 | Carman |
elmlang | general | You can think of it as a fancier `elm reactor` | 2019-04-18T16:36:48.434800 | Carman |
elmlang | general | Such things always make me sceptical | 2019-04-18T16:39:16.435100 | Agustin |
elmlang | general | Config is *always* needed | 2019-04-18T16:39:22.435300 | Agustin |
elmlang | general | Usually claims of “no config needed” means the necessary config is hard. | 2019-04-18T16:39:53.436000 | Agustin |
elmlang | general | And they don’t play well with others. | 2019-04-18T16:40:00.436200 | Agustin |
elmlang | general | Webpack for all its evils, is easily configurable, and integrates with multiple backend frameworks. | 2019-04-18T16:40:26.436800 | Agustin |
elmlang | general | <@Carman> is parcel specific for Elm? Or independent? | 2019-04-18T16:46:14.437400 | Erlene |
elmlang | general | independent | 2019-04-18T16:47:04.437600 | Danika |
elmlang | general | <https://parceljs.org/> | 2019-04-18T16:52:51.438100 | Briana |
elmlang | general | It's good! | 2019-04-18T16:52:56.438400 | Briana |
elmlang | general | very good! | 2019-04-18T16:56:09.438600 | Danika |
elmlang | general | Is there any way to do something like `Html.Events.preventDefaultOn` on the window? Such as a subscription? I need to be able to handle form and button navigation with only arrow keys. I have to be able to support a keyboard that doesn’t have a Tab key | 2019-04-18T17:00:35.441200 | Chae |
elmlang | general | <@Chae> `Browser.Events.onKeyPress` ? | 2019-04-18T17:07:37.441700 | Nana |
elmlang | general | though I guess it doesn't prevent default | 2019-04-18T17:09:29.442000 | Nana |
elmlang | general | That `prevent default` is the 1 missing part that I need :confused: | 2019-04-18T17:10:20.442800 | Chae |
elmlang | general | I guess you could just add an event listener in JS | 2019-04-18T17:12:01.443300 | Nana |
elmlang | general | I’m not sure that would work though, as I need to conditionally call `event.preventDefault()` based on elm state | 2019-04-18T17:14:56.444700 | Chae |
elmlang | general | <@Chae> I had this question yesterday and could solve it ;) <https://elmlang.slack.com/archives/C0CJ3SBBM/p1555540089368200?thread_ts=1555540089.368200&cid=C0CJ3SBBM> | 2019-04-18T19:13:27.445800 | Millie |
elmlang | general | AMA if you need further help ;) | 2019-04-18T19:17:17.446300 | Millie |
elmlang | general | I'm doing something similar. There's still the possibility of someone changing the focus outside of the outermost div though, in which case the listener no longer works. For example if the body of the app gets focus, there's no way to regain focus inside the app without a mouse or pressing Tab | 2019-04-18T19:21:17.451000 | Chae |
elmlang | general | I think this is a workaround for missing core functionality. Not too happy with it, but currently the best option I could find. | 2019-04-18T19:25:01.452300 | Millie |
elmlang | general | The gizra docs also mention adding an `id` to potentially set the focus programmatically. So one could set the focus as a fallback, when it's lost. But it won't make the solution simpler. | 2019-04-18T19:31:24.456700 | Millie |
elmlang | general | Hi, just added `prikhi/decimal` to my project to deal with decimal (obvsly) but now (the first time it compiled with one module using `Decimal`) I get this error `elm: Map.!: given key is not an element in the map`. I tried googling it which suggested to delete `elm-stuff`. I tried it, does not work... | 2019-04-19T05:10:36.458700 | Hiedi |
elmlang | general | It happens a lot when you compile with `--debug`, try without it? | 2019-04-19T05:12:43.459500 | Sharon |
elmlang | general | <@Hiedi> I might be able to fix that. Can you try the following for me?
1. Open up `~/.elm/0.19.0/package/prikhi/decimal/2.0.0/src/Decimal.elm`
2. Remove the `type alias Mantissa = BigInt` line
3. Replace the `Mantissa` in the type definition for `Decimal` with `BigInt`
4. Remove your project's `elm-stuff` folder
5. Try recompiling w/ the `--debug` flag | 2019-04-19T05:17:30.461200 | Earnest |
elmlang | general | If that works I can update the library and push out a new release for you | 2019-04-19T05:18:29.461600 | Earnest |
elmlang | general | Not sure if directly editing files in `~/.elm` will work or not though... | 2019-04-19T05:19:15.462000 | Earnest |
elmlang | general | Okay I'm trying | 2019-04-19T05:21:56.462300 | Hiedi |
elmlang | general | First it works without the --debug flag | 2019-04-19T05:22:32.462800 | Hiedi |
elmlang | general | <@Earnest> Your change does not enable to build with the debug flag | 2019-04-19T05:25:00.463500 | Hiedi |
elmlang | general | But it works without | 2019-04-19T05:25:39.463800 | Hiedi |
elmlang | general | Hmm, ok thanks for checking. I thought that bug was cause by unexported type aliases or something like that :thinking_face: | 2019-04-19T05:32:22.464400 | Earnest |
elmlang | general | I guess I just gonna have to wait for 0.19.1 since it seems like a fix is on its way | 2019-04-19T05:39:06.465000 | Hiedi |
elmlang | general | you need to remove more | 2019-04-19T05:53:14.465200 | Virgie |
elmlang | general | in `~/.elm/0.19.0/package/prikhi/decimal/2.0.0/` there are also some .dat files which you need to remove to get it to actually recompile | 2019-04-19T05:53:43.465800 | Virgie |
elmlang | general | <@Virgie> Ok thx, I will try it but I can actually wait for the problem to be fixed since it seems it's really close and since decimal is a small part of my app I can do later | 2019-04-19T05:56:04.466900 | Hiedi |
elmlang | general | hi, wanted to start learning elm and took a look at the guide yesterday. can't seem to access it right now though, was there some planned maint. or something? | 2019-04-19T09:09:00.468300 | Rubye |
elmlang | general | <https://guide.elm-lang.org/> | 2019-04-19T09:09:02.468500 | Rubye |
elmlang | general | maybe just my computer acting up, but wanted to check in | 2019-04-19T09:09:19.468900 | Rubye |
elmlang | general | I can't reach it either so I guess the site is down | 2019-04-19T09:10:39.469300 | Jae |
elmlang | general | <https://guide.elm-lang.org/> is down does anyone know if its content can be reached from elsewhere ? | 2019-04-19T09:47:58.470200 | Bart |
elmlang | general | <http://web.archive.org/web/20190417024338/https://guide.elm-lang.org/> | 2019-04-19T09:50:30.470400 | Danika |
elmlang | general | <https://github.com/evancz/guide.elm-lang.org> | 2019-04-19T09:51:25.470600 | Sharon |
elmlang | general | great ! thanks a lot ! | 2019-04-19T09:52:48.470900 | Bart |
elmlang | general | Maybe it create a ticket in the GitHub repository issue tracker? | 2019-04-19T10:33:55.472000 | Millie |
elmlang | general | It looks like gitbook is having some issues | 2019-04-19T11:00:13.472300 | Huong |
elmlang | general | Looks up now, at least here. | 2019-04-19T11:41:09.472800 | Hoa |
elmlang | general | is there a way to combine an HTTP request and some other message in such a way that first the message is sent and then the HTTP request performed? Something like this:
```
Msg = GoingToPerformARequest
send GoingToPerformARequest
|> andThen myCustomHttpRequest
``` | 2019-04-19T11:47:51.474500 | Vilma |
elmlang | general | I think I did something like this once | 2019-04-19T11:48:37.474700 | Vilma |
elmlang | general | I see that there’s a Json.Decode.maybe. Is there something like that but gives a result instead (Decoder a -> Decoder (Result Error a))? I have a list of items I’m decoding. I don’t want to break if some of the items fail, but it would be great to see a list of errors on the items that did fail to decode. | 2019-04-19T11:58:23.477700 | Jerilyn |
elmlang | general | would a `Decoder (List a) -> List (Result Error a)` also work? that is much easier | 2019-04-19T12:06:01.478400 | Virgie |
elmlang | general | how you would do that is have a 2-phase decoder, decode first with a `Decoder (List Value)`, then use `decodeValue` on the items of the list | 2019-04-19T12:08:29.479400 | Virgie |
elmlang | general | <@Virgie> would you know anything about the question I posted above? :point_up: :pray: | 2019-04-19T12:09:45.480000 | Vilma |
elmlang | general | it seems that before the `2.0.0` version of the `elm/http` package this was achieved with `toTask`, but this function no longer exists? | 2019-04-19T12:10:05.480500 | Vilma |
elmlang | general | there is still <https://package.elm-lang.org/packages/elm/http/latest/Http#task> | 2019-04-19T12:11:41.480700 | Virgie |
elmlang | general | yes, I saw that but it’s way more complicated and asking for quite a bit of parameters | 2019-04-19T12:12:11.481100 | Vilma |
elmlang | general | previously toTask was used in a pipeline, this new function is just one function that does everything without need for pipelines | 2019-04-19T12:14:34.482100 | Virgie |
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