workspace stringclasses 4
values | channel stringclasses 4
values | text stringlengths 1 3.93k | ts stringlengths 26 26 | user stringlengths 2 11 |
|---|---|---|---|---|
elmlang | general | <https://package.elm-lang.org/packages/elm/html/latest/Html-Events#onMouseUp> | 2019-01-12T06:56:19.213500 | Yang |
elmlang | general | is this working just on the element like this: | 2019-01-12T06:56:27.213800 | Yang |
elmlang | general | <https://www.w3schools.com/jsref/event_onmouseup.asp> | 2019-01-12T06:56:33.214000 | Yang |
elmlang | general | or is binded to window? | 2019-01-12T06:56:40.214300 | Yang |
elmlang | general | is for a drag and drop functionality | 2019-01-12T06:56:52.214500 | Yang |
elmlang | general | and i need to catch a mouse up anywere on the screen | 2019-01-12T06:57:03.214900 | Yang |
elmlang | general | any insight ? thansk :slightly_smiling_face: | 2019-01-12T06:57:37.215300 | Yang |
elmlang | general | `Browser.Events.onMouseUp` is definitely what you are after | 2019-01-12T06:58:58.215700 | Lynne |
elmlang | general | perfect, thanks :smile: :hugging_face: | 2019-01-12T07:02:23.216000 | Yang |
elmlang | general | Not surprisingly it was my fault :slightly_smiling_face: | 2019-01-12T08:18:46.216100 | Pauletta |
elmlang | general | For which company do you work <@Rosa>? | 2019-01-12T10:11:32.216300 | Allyn |
elmlang | general | is there an elm implementation of elm-format? Looks like not... | 2019-01-12T12:00:05.217400 | Earnestine |
elmlang | general | It is written in Haskell | 2019-01-12T12:56:28.217700 | Lynne |
elmlang | general | Hello, unfortunaltely, nobody answered in the beginners channel, so I'll try to ask here. Does anybody know export/import debug history working in 0.19 or not? I'm getting 'Looks like this history file is corrupt. I cannot understand it.' when I try to import my exported history. | 2019-01-12T13:03:35.218500 | Geralyn |
elmlang | general | It wasn't working when 0.19 was released, and there have been no patches since. | 2019-01-12T13:28:13.218900 | Elyse |
elmlang | general | Ok./ thank you | 2019-01-12T13:35:13.219100 | Geralyn |
elmlang | general | re-export of types works (via a type alias), re-export of their constructors does not work... right? or do I miss something? | 2019-01-12T15:49:19.220200 | Earnestine |
elmlang | general | That is correct | 2019-01-12T16:11:49.220600 | Bert |
elmlang | general | alright, thx! | 2019-01-12T16:18:46.220900 | Earnestine |
elmlang | general | Hello! I am building a little app that visualizes common list transformations like map, filter, and fold/reduce.
<https://github.com/tmikeschu/see-fp>
I am trying to figure out how to model the different functions that could be passed to, for example, a map function.
I started off with mapping `increment` over a lis... | 2019-01-12T18:03:04.226400 | Forrest |
elmlang | general | Cool project! :slightly_smiling_face: I am wondering why for example `Increment` carries a function around with it. Isn’t there only one possible implementation for that anyway? It feels to me that the actual function should not be part of the `Operation` type.
I think the core issue is the fact that your functions ca... | 2019-01-12T18:12:07.226700 | Timika |
elmlang | general | <@Forrest> Do you mean something like this?
```
type Transformation a b
= Mapable (a -> b)
| Filterable (a -> Maybe b)
| Accumulatation b (a -> b -> b)
increment : Transformation Int Int
increment = Mapable (\x -> x + 1)
``` | 2019-01-12T18:19:24.230200 | Earnest |
elmlang | general | Not quite sure what your end goal is though. Do you just want a type for users to select different map actions? | 2019-01-12T18:25:30.231800 | Earnest |
elmlang | general | I understood it as the desire to put all operations into one `List` any be able to apply them somehow generically. Could be wrong though. | 2019-01-12T18:26:30.233500 | Timika |
elmlang | general | <@Forrest> You figure out what you needed? | 2019-01-12T20:31:56.234100 | Earnest |
elmlang | general | Yeah that actually makes a lot of sense!
The whole time I’ve felt weird about trying to model the core of lambda calc as a type haha. It’s great to hear another voice say that’s overkill.
The high level is to try to represent the model in a generic way. Given that I’ll have a variety of input and output types, do you... | 2019-01-12T23:34:34.238800 | Forrest |
elmlang | general | Thanks for the feedback! <@Timika> picked up what I was putting down. I’m going for representing the selected list and function, whether a -> Bool, a -> b, or other, as generically as possible.
So whether a user picks filter names by length or map cats to humans, the model and updates would be similar if not the... | 2019-01-12T23:39:31.242700 | Forrest |
elmlang | general | does anyone have a good (and up-to-date) example of url routing in an elm program? basically, what would normally go in the *Synthesis* section of <https://guide.elm-lang.org/webapps/url_parsing.html> | 2019-01-13T00:44:37.243600 | Dee |
elmlang | general | currently mulling questions like, should i have separate entries for the current route AND possible data extracted from said route in my model record | 2019-01-13T00:45:57.244900 | Dee |
elmlang | general | These kind of decisions tend to be application specific. But always try to only store a value once. | 2019-01-13T02:20:15.245300 | Earlean |
elmlang | general | I thought about this and I think there is a solution from a different angle. If all your types are finite you could make a custom type that wraps all possible types in your app. ‘type SeeFpType = IntValue Int | CatValue Cat | ...’. Your functions can then be functions from SeeFpType to SeeFpType. It makes implementatio... | 2019-01-13T04:54:32.252200 | Timika |
elmlang | general | Custom types suit well to store both route and data. Given examples from the section "Examples 3" on the page you mentioned the simplest example could be:
```
type Route
= ElmBasics
| ElmMaybe
| ElmList (Maybe String)
```
If you'd want go wilder you could replace `Maybe String` with another type denoting co... | 2019-01-13T05:07:43.252400 | Lynne |
elmlang | general | how to achive a mouseHover text underline in elm-ui?
i have: `mouseOver [ Font.underline ]`
but it doesnt compile
since Font.underline is not a Decoration
<https://package.elm-lang.org/packages/mdgriffith/elm-ui/latest/Element#mouseOver>
<https://package.elm-lang.org/packages/mdgriffith/elm-ui/latest/Element-Font... | 2019-01-13T09:42:27.253100 | Yang |
elmlang | general | <@Yang> You will probably get more help if you ask in <#C4F9NBLR1|elm-ui> | 2019-01-13T09:46:20.253500 | Lynne |
elmlang | general | already did that thanks, nowbody is around there for now.. though i have more luck here. | 2019-01-13T09:46:48.254100 | Yang |
elmlang | general | same for Font.bold | 2019-01-13T09:46:55.254300 | Yang |
elmlang | general | i want the font to be bold under mouse hover. | 2019-01-13T09:47:07.254700 | Yang |
elmlang | general | Anybody know the date for US elm-conf 2019? Will it be in St. Louis again? | 2019-01-13T12:37:09.256100 | Deann |
elmlang | general | Historically it's always been a pre-conf event that's connected with StrangeLoop | 2019-01-13T12:38:53.257100 | Carman |
elmlang | general | Based on their website, StrangeLoop will occur September 12-14 this year in St. Louis | 2019-01-13T12:39:24.257700 | Carman |
elmlang | general | So going by previous years I'd guess that elm-conf would happen on ~September 11~ | 2019-01-13T12:39:50.258300 | Carman |
elmlang | general | just checked the fine print on <https://www.thestrangeloop.com/>, pre-conf events occur on Sept 12 :slightly_smiling_face: | 2019-01-13T12:40:44.259200 | Carman |
elmlang | general | Hey peeps, could someone help me get my head around opaque types and extensible records. I have the following types:
```
type alias Node a =
{ a | connections : List Connection, id : NodeID, type_ : NodeType }
type alias OscillatorNode
= Node { detune : Float, frequency : Float, waveform : Waveform }
```
and th... | 2019-01-13T12:50:05.262300 | Danika |
elmlang | general | a pattern match. so
```
case node of
{ id } -> ...
``` | 2019-01-13T12:51:03.262600 | Virgie |
elmlang | general | that would be `Node { id }` if it's wrapped | 2019-01-13T12:51:45.263100 | Virgie |
elmlang | general | Oh really? OK cheers, I'll give that a go. | 2019-01-13T12:52:28.263500 | Danika |
elmlang | general | Looking at your example, the extensible record + `type_` field is a bit of a smell pointing out that a custom type may be a better modeling of your domain. | 2019-01-13T12:57:05.266700 | Carman |
elmlang | general | For example something like:
```
type Node
= OscillatorNode { connections : List Connection, id : NodeId, detune : Float, frequency : Float, waveform : Float }
| OtherTypeOfNode ...
| ...
``` | 2019-01-13T12:57:07.266900 | Carman |
elmlang | general | This allows you to have different node types, keep your type opaque, and vary the fields present on each node type | 2019-01-13T12:57:46.268100 | Carman |
elmlang | general | To make this nicer to use, you may want to alias the record that gets wrapped | 2019-01-13T12:58:11.268800 | Carman |
elmlang | general | Yes I was considering doing something like that. It seemed redundant when all nodes share some common fields, and (I think) allowed for user-defined nodes | 2019-01-13T12:58:35.269100 | Danika |
elmlang | general | I think I probably agree on `type_` being less than ideal (and probably makes my whole "user defined nodes" thing break...) | 2019-01-13T12:59:30.270200 | Danika |
elmlang | general | Using a type like that also means I have to `case` over all the options and perform the exact same operation when I want to have generic `Node` functions, no? | 2019-01-13T13:00:31.271400 | Danika |
elmlang | general | correct | 2019-01-13T13:00:51.271800 | Carman |
elmlang | general | A variation that extracts the common fields could look like this:
```
type Node = Node { connections: List Connection, id : NodeId, details : NodeDetails }
type NodeDetails
= OscillatorDetails { detune : Float, frequency : Float, waveform : Float }
| OtherDetails { .. }
| ...
``` | 2019-01-13T13:01:49.272900 | Carman |
elmlang | general | Hmm looks like I have some options to consider | 2019-01-13T13:04:07.273400 | Danika |
elmlang | general | In my experience, you're better off trying to compose data than trying to fake an inheritance hierarchy via extensible records :slightly_smiling_face: | 2019-01-13T13:05:24.274200 | Carman |
elmlang | general | for some extra context:
```
createOscillatorNode : NodeID -> OscillatorNode
createOscillatorNode id = {
connections = [],
id = id,
type_ = Oscillator,
detune = 0.0,
frequency = 440.0,
waveform = Sine
}
setDetune : Float -> OscillatorNode -> OscillatorNode
setDetune val osc =
{ os... | 2019-01-13T13:07:20.275600 | Danika |
elmlang | general | I'd like to preserve this | 2019-01-13T13:07:28.275800 | Danika |
elmlang | general | And I think that also breaks down if I use some sort of Node union type | 2019-01-13T13:07:49.276100 | Danika |
elmlang | general | I don't really feel like I'm trying (nor do i want) to hack some sort of OOP solution. But it does strongly seem like an extensible record is the appropriate thing for the `Node` :thinking_face: I shall do some more thinkign with your suggestions in mind | 2019-01-13T13:12:16.277900 | Danika |
elmlang | general | Do you have any functions that are generic to any kind of node? | 2019-01-13T13:13:01.278200 | Carman |
elmlang | general | because if you don't you could just have a bunch of concrete record aliases | 2019-01-13T13:13:35.278900 | Carman |
elmlang | general | `connect` connects two generic nodes together | 2019-01-13T13:13:40.279000 | Danika |
elmlang | general | I think I came up with a solution | 2019-01-13T13:41:14.280700 | Danika |
elmlang | general | Interesting! Thank you. I’ll give that a look!
I’ll let you know if I find any other solutions. Thanks! | 2019-01-13T14:10:49.283700 | Forrest |
elmlang | general | Does there exist something like json decode pipeline but for `elm/bytes`? | 2019-01-13T16:34:18.284800 | Jae |
elmlang | general | you can define the `andMap` function (see <https://github.com/folkertdev/elm-cff/blob/master/src/Decode/Extra.elm#L33>) and then use that to make pipelines (like here <https://github.com/folkertdev/elm-cff/blob/master/src/CompactFontFormat.elm#L72>) | 2019-01-13T18:17:09.284900 | Virgie |
elmlang | general | Does anyone do an ELM debugging service | 2019-01-13T20:04:55.285400 | Grisel |
elmlang | general | Can pay Bitcoin Cash. | 2019-01-13T20:05:05.285700 | Grisel |
elmlang | general | My implementation of SVG is broken… don’t see why | 2019-01-13T20:05:23.286100 | Grisel |
elmlang | general | Hi folks, I got `String.fromFloat (4.1 - 1)` as `"3.0999999999999996"`, how can I got `"3.1"` as expected? | 2019-01-14T02:29:28.287500 | Raymonde |
elmlang | general | This is not trivial. Basically you need a function rounding to N digits after comma (in your case 1 digit). | 2019-01-14T02:45:49.289200 | Lynne |
elmlang | general | This is an example: `String.fromFloat <| (toFloat <| ceiling ((4.1 - 1) * 10.0)) / 10.0` | 2019-01-14T02:45:56.289400 | Lynne |
elmlang | general | You may need to look for some library already defining such functions | 2019-01-14T02:46:14.289600 | Lynne |
elmlang | general | <@Lynne> The problem is the number input from user, so the digits after comma is arbitrary | 2019-01-14T02:50:13.289800 | Raymonde |
elmlang | general | I understand, just replace `4.1` with whatever you parse from that input then | 2019-01-14T02:58:22.290000 | Lynne |
elmlang | general | The most crucial part here is multiplying by 10^N, ceiling and then dividing by 10^N where N is number of digits after comma | 2019-01-14T02:59:12.290200 | Lynne |
elmlang | general | Are you saying that you don't know exactly how many digits after comma you want? | 2019-01-14T02:59:37.290400 | Lynne |
elmlang | general | Yeah | 2019-01-14T02:59:46.290600 | Raymonde |
elmlang | general | I see | 2019-01-14T02:59:50.290800 | Lynne |
elmlang | general | I am actually not sure it is possible to solve this without knowing number of digits | 2019-01-14T03:00:31.291100 | Lynne |
elmlang | general | Due to the nature of floating point numbers | 2019-01-14T03:00:55.291300 | Lynne |
elmlang | general | At some point rounding should happen | 2019-01-14T03:01:26.291500 | Lynne |
elmlang | general | There is <https://package.elm-lang.org/packages/myrho/elm-round/latest/> | 2019-01-14T03:01:44.291700 | Jin |
elmlang | general | So I have to parse the number of digits from the input number first. That’s not ideal. | 2019-01-14T03:02:00.291900 | Raymonde |
elmlang | general | I would actually check what problem you are trying to solve | 2019-01-14T03:04:36.292100 | Lynne |
elmlang | general | For most tasks in the world 4 digits are usually enough | 2019-01-14T03:04:45.292300 | Lynne |
elmlang | general | You already have to turn the textual input into a number, probably. This would be a good place to also check for the significant digits. | 2019-01-14T03:05:02.292600 | Jin |
elmlang | general | For displaying | 2019-01-14T03:05:03.292800 | Lynne |
elmlang | general | If you are not sure, use 5 or 10 digits. Unnecessary zeroes will go anyway so it will cover most of the inputs probably | 2019-01-14T03:05:37.293000 | Lynne |
elmlang | general | I’m implementing a custom input like this, note the `+` is always there, might be `-` according to the number. | 2019-01-14T03:07:52.293200 | Raymonde |
elmlang | general | <@Raymonde> Just to make this clear, this is **not** an Elm-specific issue. The reason this is happening is how floating point numbers arithmetics work in JavaScript (Elm relies on JS numbers at the low level), and a whole lot of other languages including C, Java, and so on. | 2019-01-14T03:09:35.293800 | Bert |
elmlang | general | I think it is an architectural issue. I.e. x86, x64 or whatever else | 2019-01-14T03:10:23.294000 | Lynne |
elmlang | general | Where is the code and how is it broken? | 2019-01-14T03:11:00.294200 | Bert |
elmlang | general | IEEE floating point | 2019-01-14T03:12:00.294400 | Iona |
elmlang | general | Exactly | 2019-01-14T03:12:33.294600 | Lynne |
elmlang | general | OK, got it, I think I can parse the digits number from input to solve this. Not ideal though. | 2019-01-14T03:12:53.294800 | Raymonde |
elmlang | general | You could try <https://package.elm-lang.org/packages/prikhi/decimal/latest/Decimal> too | 2019-01-14T03:16:57.295000 | Bert |
elmlang | general | And use elm-round which <@Jin> suggested. It mentions there still can be issues with multiply/divide approach | 2019-01-14T03:17:07.295200 | Lynne |
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