spencer/software_slacks · Datasets at Hugging Face

workspace stringclasses 4 values	channel stringclasses 4 values	text stringlengths 1 3.93k	ts stringlengths 26 26	user stringlengths 2 11
elmlang	general	so mixing elm code with interpreted code in a flexible way is hard/not feasible	2019-01-19T08:15:35.626500	Virgie
elmlang	general	Hmm, that is discouraging but makes sense.	2019-01-19T08:16:07.626700	Danika
elmlang	general	So it must be connected to how Elm is batching model updates to only call `view` once per animation frame. Adding JS ``` this.addEventListener('focus', () => { setTimeout(() => this.dispatchEvent(new CustomEvent('delayed-focus')), 5); }); ``` and subscribing to `delayed-focus` in Elm fixes the issue	2019-01-19T09:17:57.628100	Lynne
elmlang	general	Is anyone aware of any Github issue this could be added to?	2019-01-19T09:18:55.628700	Lynne
elmlang	general	Hi, I installed `NoRedInk/elm-debug-controls-without-datepicker` and now I'm consistently getting this error ```elm.exe: Map.!: given key is not an element in the map CallStack (from HasCallStack): error, called at libraries\containers\Data\Map\Internal.hs:603:17 in containers-0.5.10.2:Data.Map.Internal @ ./src/index.js 2:0-33 4:0-3 @ multi ../AppData/Local/Yarn/Data/global/node_modules/create-elm-app/config/polyfills.js ../AppData/Local/Yarn/Data/global/node_modules/create-elm-app/scripts/utils/webpackHotDevClient.js ../AppData/Local/Yarn/Data/global/node_modules/react-error-overlay/lib/index.js ./src/index.js``` Removing `elm-stuff` and clearing the package cache in appdata doesn't help.	2019-01-19T10:17:24.629900	Jae
elmlang	general	<@Jae> it's a known bug in the compiler. If you're using the `--debug` flag with the compiler then not using that may solve the problem.	2019-01-19T10:20:51.632200	Earlean
elmlang	general	If you're not using the `--debug` flag and still seeing that error then you've encountered a version of the bug for which there isn't currently a work around.	2019-01-19T10:22:17.634100	Earlean
elmlang	general	Alright thanks, I'll try that	2019-01-19T10:23:43.634900	Jae
elmlang	general	Yup that works. I guess it's a little ironic that installing a package designed to help with debugging has led me to disable the debugger	2019-01-19T10:31:11.635900	Jae
elmlang	general	Anyone have an update on this bug :sob:	2019-01-19T12:15:12.636600	Jenice
elmlang	general	it has been very quiet on that front. Even if it were fixed today there are maybe some other things that it would also make sense to include in a 0.19.1 (adding/upgrading packages for instance) release so I'd guess it's not coming very soon	2019-01-19T12:21:27.638100	Virgie
elmlang	general	Hi everyone - are there recommendations on best Elm book that covers SPAs in detail from the ground up in 0.19?	2019-01-19T12:59:38.638700	Loyce
elmlang	general	Yes!	2019-01-19T13:39:21.639000	Jana
elmlang	general	I would say “Practical Elm for a Busy Developer” <https://korban.net/elm/book/>	2019-01-19T14:27:20.639500	Allyn
elmlang	general	how can I generate a random value for use in a Task? I see that <https://package.elm-lang.org/packages/elm/random/latest/Random> has a `generate` function that returns a `Cmd`, but I’m looking for a `Task`	2019-01-19T20:30:33.641500	Marlin
elmlang	general	I also found <https://gist.github.com/JoelQ/c93a8f6a81262ff12c93ab2ff859f8e5> but as far as I can tell that produces the same value every time, it is not actually random at all	2019-01-19T20:34:03.641600	Marlin
elmlang	general	<@Marlin> there isn't a way to do it as a Task and have the runtime manage the seed, but you can `step` and generator in a Task if you manage the seed yourself	2019-01-19T21:09:38.641800	Earlean
elmlang	general	okay, thanks	2019-01-19T21:18:07.642000	Marlin
elmlang	general	<@Marlin> The gist you found (written for 0.18) uses the current time as the seed. It should give you different results every time unless you've frozen you clock somehow	2019-01-19T21:42:14.642400	Carman
elmlang	general	Here's a working example for 0.19: <https://ellie-app.com/4vCp7Vzz5cNa1>	2019-01-19T21:48:35.642600	Carman
elmlang	general	Note that I'm executing it via `Task.perform`, _not_ `Random.generate`	2019-01-19T21:49:00.642800	Carman
elmlang	general	ah, sorry I missed the time, I must have ~called it twice in one second~ been unlucky (and obviously I didn’t read it very carefully!)	2019-01-19T21:53:47.643100	Marlin
elmlang	general	thanks for the updated example, this is helpful	2019-01-19T21:54:06.643300	Marlin
elmlang	general	for now, I’m probably going to have to leave out randomness and keep a `TODO` comment, since it doesn’t really make sense for consumers of the module I’m writing to have to worry about helping manage the seed state	2019-01-19T21:56:12.643600	Marlin
elmlang	general	What does the module do	2019-01-20T00:25:01.644300	Danika
elmlang	general	I'm musing about what pattern is this... is it an `andThen`? ``` andThen : (model -> (model, cmd)) -> (model, cmd) -> (model, cmd) andThen modelToModelCmdTuple (model, cmd) = let (newModel, anotherCmd) = modelToModelCmdTuple model in ( newModel , Cmd.batch [cmd, anotherCmd] ) ``` ie. ``` model \|> doStuffWithCmds -- we have `(model, cmd)` now -- but `doDifferentStuffWithCmds` needs a `model` -- so we use this combinator or whatever it is \|> andThen doDifferentStuffWithCmds ```	2019-01-20T16:10:10.650300	Florencia
elmlang	general	<@Leoma> <@Ashton> Maybe you folks have some insight into it, given our previous cmd-related discussions? :slightly_smiling_face:	2019-01-20T16:11:11.651000	Florencia
elmlang	general	monadic `andThen` is `(a -> Monad b) -> Monad a -> Monad c` ie. `Json.Decode.andThen : (a -> Decoder b) -> Decoder a -> Decoder b` so ... the type signature probably checks out, right?	2019-01-20T16:13:15.652600	Florencia
elmlang	general	You seem to have extra parans in the signature	2019-01-20T16:13:46.653400	Carrol
elmlang	general	the right-associativity makes it a non-problem though I think	2019-01-20T16:14:08.654300	Florencia
elmlang	general	it's interesting there's no `Cmd.andThen` in any of our packages! :slightly_smiling_face:	2019-01-20T16:14:12.654500	Florencia
elmlang	general	`andThen` sounds right to me.	2019-01-20T16:14:13.654600	Carrol
elmlang	general	but yeah I should fix the parens	2019-01-20T16:14:28.655000	Florencia
elmlang	general	We have the same: ``` andThen fn ( model, cmd ) = let ( updatedModel, newCmd ) = fn model in ( updatedModel, Cmd.batch [ cmd, newCmd ] ) ```	2019-01-20T16:14:58.655600	Carrol
elmlang	general	<@Zona> How could have you missed this golden opportunity :troll:	2019-01-20T16:15:05.655700	Florencia
elmlang	general	I stand corrected: there's one package that does this: <https://package.elm-lang.org/packages/the-sett/elm-update-helper/1.4.1/Update2#eval>	2019-01-20T16:19:23.656300	Florencia
elmlang	general	This one too <https://package.elm-lang.org/packages/Fresheyeball/elm-return/latest/Return#andThen>	2019-01-20T16:20:02.656500	Carrol
elmlang	general	nice	2019-01-20T16:21:30.656700	Florencia
elmlang	general	I wasn't good enough with the fuzzy search :upside_down_face:	2019-01-20T16:21:37.657100	Florencia
elmlang	general	Well, now there's one more place for it :slightly_smiling_face: <https://package.elm-lang.org/packages/Janiczek/cmd-extra/latest/Cmd-Extra#andThen>	2019-01-20T16:25:56.657800	Florencia
elmlang	general	Yeah looks like `andThen` to me.	2019-01-20T16:39:56.658200	Ashton
elmlang	general	Theres probably some fancy FP word for an `andThen` that binds back onto the same type.	2019-01-20T16:51:44.660800	Ashton
elmlang	general	`map`?	2019-01-20T16:51:59.661300	Agustin
elmlang	general	No. I mean. The model/cmd tuple goes `(m -> M m) -> M m -> M m`. Lower case `m` all the way through. Unlike the normal case of going `a -> M b`, where it goes from type `a` to type `b`	2019-01-20T16:53:24.662500	Ashton
elmlang	general	oh I see what you mean	2019-01-20T16:53:55.663200	Florencia
elmlang	general	something-something-morphism :sweat_smile:	2019-01-20T16:54:05.663600	Florencia
elmlang	general	Actually, I started a conversation a few months back in here asking if `(a -> a) -> M a -> M a` is still “mapping”. And there were disagreeing voices, but I think team “yes” won.	2019-01-20T16:54:40.664800	Ashton
elmlang	general	Yeah exactly. Haha. A something-morphism.	2019-01-20T16:55:05.665200	Ashton
elmlang	general	Endo-thing.	2019-01-20T16:55:08.665500	Ashton
elmlang	general	Is this what ordinary programmers trying to look like category theorists look like? :joy:	2019-01-20T16:57:15.666500	Florencia
elmlang	general	(honestly, I love this discussion)	2019-01-20T16:57:28.666800	Florencia
elmlang	general	Hmmm I think the term might be "monomorphic" (one shape)?	2019-01-20T17:01:06.667700	Carman
elmlang	general	Although I've usually seen the term used for functions that had a concrete type like `String.map : (Char -> Char) -> String -> String`	2019-01-20T17:01:47.668300	Carman
elmlang	general	There is this theory… of the möbius… where the types become a loop.	2019-01-20T17:04:39.668800	Agustin
elmlang	general	Is there a way to replace elm-community/elm-date-extra in 0.18 in preparation for 0.19? Specifically I need the utc/posix functionality in 0.18	2019-01-20T17:09:22.671000	Jeniffer
elmlang	general	<@Jeniffer> I'm no Elm expert, but I spent many hours figuring out how to upgrade to 0.19 with all the date/time changes (I'm working on a calendar) as I talked about here: <https://discourse.elm-lang.org/t/no-longer-an-official-way-to-store-zoneless-times-in-0-19/2454> From that experience, I might suggest this library to answer your question (if I understand it correctly): <https://package.elm-lang.org/packages/justinmimbs/time-extra/latest/Time-Extra>	2019-01-20T18:08:24.674600	Erin
elmlang	general	Thanks <@Erin> ! I’ll check it out!	2019-01-20T18:38:06.675500	Jeniffer
elmlang	general	there is a lot of attempts to try to fit monads into tea e.g. <https://package.elm-lang.org/packages/Fresheyeball/elm-return/latest/Return#andThen> but it’s imo not that practical since there are some limitations	2019-01-20T20:55:00.675800	Zona
elmlang	general	it’s not. it isn’t monad	2019-01-20T20:55:54.676100	Zona
elmlang	general	not even that. even map goes a -> b	2019-01-20T20:56:43.676400	Zona
elmlang	general	not really. it doesn’t have domain and co-domain. This thing is usually called `update` in elm	2019-01-20T21:03:59.676600	Zona
elmlang	general	hello all, has anyone added the FB group plugin embedded code into their Elm code?	2019-01-20T21:07:32.677500	Chadwick
elmlang	general	I’ve added the top to my index.html and the bottom to the Elm code but I can’t get it compile	2019-01-20T21:08:22.677600	Chadwick
elmlang	general	``` div [ class "fb-group", "data-href" "<https://www.facebook.com/pettingzooocalafl>", "data-width" "280", "data-show-social-context" "true", "data-show-metadata" "false" ] [] ```	2019-01-20T21:08:29.678000	Chadwick
elmlang	general	thanks in advance for your time! :slightly_smiling_face:	2019-01-20T21:10:06.678300	Chadwick
elmlang	general	<@Chadwick> do you have an HTML page that you’re inserting your Elm app info?	2019-01-20T21:12:15.679400	Yolande
elmlang	general	yes	2019-01-20T21:12:32.679800	Chadwick
elmlang	general	just the index	2019-01-20T21:12:42.680100	Chadwick
elmlang	general	``` view : Model -> Browser.Document Msg ```	2019-01-20T21:13:35.681200	Chadwick
elmlang	general	And where does the FB JS blob get pasted?	2019-01-20T21:13:57.681800	Yolande
elmlang	general	<https://developers.facebook.com/docs/plugins/group-plugin#configurator>	2019-01-20T21:14:18.682000	Chadwick
elmlang	general	some in the head and some in the place where the div is going to be rendered	2019-01-20T21:14:32.682600	Chadwick
elmlang	general	Got it. Hmm. Maybe there’s some obstacle between their script and the DOM nodes that Elm is managing. When you inspect the div does it look like you specified?	2019-01-20T21:15:54.684800	Yolande
elmlang	general	<@Chadwick> you'll need to use <https://package.elm-lang.org/packages/elm/html/latest/Html-Attributes#attribute> for those 'data-' attributes	2019-01-20T21:15:58.685000	Earlean
elmlang	general	eg. ``` div [ class "fb-group" , attribute "data-href" "<https://www.facebook.com/pettingzooocalafl>" , attribute "data-width" "280" , attribute "data-show-social-context" "true" , attribute "data-show-metadata" "false" ] [] ```	2019-01-20T21:17:14.686300	Earlean
elmlang	general	that did the trick! awesine! thanks <@Earlean>, `html-attribute` was the keyword I was looking for :slightly_smiling_face:	2019-01-20T21:22:35.687100	Chadwick
elmlang	general	Hey, I know I’ve seen other people have this issue as well, but can’t recall what the solution was. Just upgraded an `elm 0.18` package that was at version 1.0.1 to `elm 0.19` with a new package at version 2.0 <https://package.elm-lang.org/packages/cmditch/elm-ethereum/2.0.0/> and getting this warning message `Warning! The latest version of this package is 1.0.1` Any idea how to fix this?	2019-01-20T22:21:32.688300	Talisha
elmlang	general	<@Talisha> seems fine now, I assume it was just a cache issue.	2019-01-20T23:05:28.689900	Earlean
elmlang	general	ahh, thanks for checking	2019-01-20T23:17:40.690200	Talisha
elmlang	general	Can anyone confirm that there is indeed no way to update a record in a similar way to the .accessor methods? e.g. for record `{ name : String }` you can use `.name record` to get the string, but you'd need to define your own `updateName : String -> { name : String} -> { name : String }` if you wanted to have a simple updater for it, right?	2019-01-20T23:30:48.692800	Cletus
elmlang	general	Yup	2019-01-20T23:39:39.693100	Earnest
elmlang	general	There search isn’t good enough :slightly_smiling_face:	2019-01-21T02:56:54.693600	Jin
elmlang	general	so I came up with a solution to my "problem" earlier regarding setting `RemoteData` to `Loading` not actually being tied to loading the data. instead of having the usual: `getFolder : FileContainer.ID -> Cmd Msg` you can have: `loadFolder : FileContainer.ID -> ( Model, Cmd Msg ) -> ( Model, Cmd Msg )` and then instead of doing: `({model \| folder = Loading}, getFolder folderId)` you do: `(model, Cmd.none) \|> loadFolder folderId`	2019-01-21T03:41:56.697100	Nana
elmlang	general	is this a common pattern?	2019-01-21T03:44:04.697600	Nana
elmlang	general	I think so yes. I found it's really nice to have complex update functions implemented as a pipe of functions. You can even create a function `andThen` that abstracts the Cmd.batch mecanism.	2019-01-21T03:46:58.699200	Karissa
elmlang	general	Something like: ``` andThen : (Model -> (Model, Cmd msg)) -> (Model, Cmd msg) -> (Model, Cmd msg) andThen function (model, cmds) = let (newModel, extraCmds) = function model in (newModel, Cmd.batch [cmds, extraCmds]) ``` That you can use like this: `(model, Cmd.none) \|> andThen (loadFolder folderId) \|> andThen otherFunction`.	2019-01-21T03:52:35.702500	Karissa
elmlang	general	Ah but map can also go b -> a	2019-01-21T05:23:37.703200	Agustin
elmlang	general	Its also my goto hack to convert things back to my global msg :joy:	2019-01-21T05:24:05.703400	Agustin
elmlang	general	<@Karissa> I don't like that implementation. You're somehow hinting that `andThen` is sequential, where `Cmd.batch` doesn't guarantee that one.	2019-01-21T06:43:44.704800	Niesha
elmlang	general	Or rather, I don't like the name.	2019-01-21T06:43:59.705000	Niesha
elmlang	general	Cant the domain and co-domain be the same domain? Or, cant the domain and co-domain have the same type?	2019-01-21T06:52:30.705100	Ashton
elmlang	general	I guess its just a matter of how you define it, but, a function can go `a -> a`. Thats not an issue. Maybe I dont understand functors enough, but I think endofunctors map back onto the sae domain.	2019-01-21T06:57:10.705300	Ashton
elmlang	general	no guarantees for result ordering... but i think at least they would be issued in that order?	2019-01-21T07:03:57.707100	Alysa
elmlang	general	IIRC they are issued in the reverse order. As in, FILO for a recursive tree structure	2019-01-21T07:10:19.707300	Bert
elmlang	general	Yeah the name is chosen to be consistent with Maybe.andThen etc.	2019-01-21T07:11:27.707500	Karissa
elmlang	general	The signature is, but the behavior isn't.	2019-01-21T07:51:49.707800	Niesha
elmlang	general	I'd love other name suggestions, naming is hard ^^	2019-01-21T07:54:27.708000	Karissa
elmlang	general	`map2` etc. sound appropriate here	2019-01-21T08:00:11.708200	Niesha
elmlang	general	Without changing the signature it wouldn't be consistent. And I still like to convey the idea of chaining or piping changes to Model while retaining the ability to produce Cmds. Maybe `chain` or something like that.	2019-01-21T08:16:56.709600	Karissa
elmlang	general	Hi, I wanted to test the export/import feature in the debugger but whenever I try using it I get ```Cannot Import History Looks like this history file is corrupt. I cannot understand it.``` I haven't made any changes between exporting and importing the history.	2019-01-21T08:17:10.710100	Jae

elmlang

general

so mixing elm code with interpreted code in a flexible way is hard/not feasible

2019-01-19T08:15:35.626500

Virgie

elmlang

general

Hmm, that is discouraging but makes sense.

2019-01-19T08:16:07.626700

Danika

elmlang

general

So it must be connected to how Elm is batching model updates to only call `view` once per animation frame. Adding JS ``` this.addEventListener('focus', () => { setTimeout(() => this.dispatchEvent(new CustomEvent('delayed-focus')), 5); }); ``` and subscribing to `delayed-focus` in Elm fixes the issue

2019-01-19T09:17:57.628100

Lynne

elmlang

general

Is anyone aware of any Github issue this could be added to?

2019-01-19T09:18:55.628700

Lynne

elmlang

general

Hi, I installed `NoRedInk/elm-debug-controls-without-datepicker` and now I'm consistently getting this error ```elm.exe: Map.!: given key is not an element in the map CallStack (from HasCallStack): error, called at libraries\containers\Data\Map\Internal.hs:603:17 in containers-0.5.10.2:Data.Map.Internal @ ./src/index.js 2:0-33 4:0-3 @ multi ../AppData/Local/Yarn/Data/global/node_modules/create-elm-app/config/polyfills.js ../AppData/Local/Yarn/Data/global/node_modules/create-elm-app/scripts/utils/webpackHotDevClient.js ../AppData/Local/Yarn/Data/global/node_modules/react-error-overlay/lib/index.js ./src/index.js``` Removing `elm-stuff` and clearing the package cache in appdata doesn't help.

2019-01-19T10:17:24.629900

Jae

elmlang

general

<@Jae> it's a known bug in the compiler. If you're using the `--debug` flag with the compiler then not using that may solve the problem.

2019-01-19T10:20:51.632200

Earlean

elmlang

general

If you're not using the `--debug` flag and still seeing that error then you've encountered a version of the bug for which there isn't currently a work around.

2019-01-19T10:22:17.634100

Earlean

elmlang

general

Alright thanks, I'll try that

2019-01-19T10:23:43.634900

Jae

elmlang

general

Yup that works. I guess it's a little ironic that installing a package designed to help with debugging has led me to disable the debugger

2019-01-19T10:31:11.635900

Jae

elmlang

general

Anyone have an update on this bug :sob:

2019-01-19T12:15:12.636600

Jenice

elmlang

general

it has been very quiet on that front. Even if it were fixed today there are maybe some other things that it would also make sense to include in a 0.19.1 (adding/upgrading packages for instance) release so I'd guess it's not coming very soon

2019-01-19T12:21:27.638100

Virgie

elmlang

general

Hi everyone - are there recommendations on best Elm book that covers SPAs in detail from the ground up in 0.19?

2019-01-19T12:59:38.638700

Loyce

elmlang

general

Yes!

2019-01-19T13:39:21.639000

Jana

elmlang

general

I would say “Practical Elm for a Busy Developer” <https://korban.net/elm/book/>

2019-01-19T14:27:20.639500

Allyn

elmlang

general

how can I generate a random value for use in a Task? I see that <https://package.elm-lang.org/packages/elm/random/latest/Random> has a `generate` function that returns a `Cmd`, but I’m looking for a `Task`

2019-01-19T20:30:33.641500

Marlin

elmlang

general

I also found <https://gist.github.com/JoelQ/c93a8f6a81262ff12c93ab2ff859f8e5> but as far as I can tell that produces the same value every time, it is not actually random at all

2019-01-19T20:34:03.641600

Marlin

elmlang

general

<@Marlin> there isn't a way to do it as a Task and have the runtime manage the seed, but you can `step` and generator in a Task if you manage the seed yourself

2019-01-19T21:09:38.641800

Earlean

elmlang

general

okay, thanks

2019-01-19T21:18:07.642000

Marlin

elmlang

general

<@Marlin> The gist you found (written for 0.18) uses the current time as the seed. It should give you different results every time unless you've frozen you clock somehow

2019-01-19T21:42:14.642400

Carman

elmlang

general

Here's a working example for 0.19: <https://ellie-app.com/4vCp7Vzz5cNa1>

2019-01-19T21:48:35.642600

Carman

elmlang

general

Note that I'm executing it via `Task.perform`, _not_ `Random.generate`

2019-01-19T21:49:00.642800

Carman

elmlang

general

ah, sorry I missed the time, I must have ~called it twice in one second~ been unlucky (and obviously I didn’t read it very carefully!)

2019-01-19T21:53:47.643100

Marlin

elmlang

general

thanks for the updated example, this is helpful

2019-01-19T21:54:06.643300

Marlin

elmlang

general

for now, I’m probably going to have to leave out randomness and keep a `TODO` comment, since it doesn’t really make sense for consumers of the module I’m writing to have to worry about helping manage the seed state

2019-01-19T21:56:12.643600

Marlin

elmlang

general

What does the module do

2019-01-20T00:25:01.644300

Danika

elmlang

general

I'm musing about what pattern is this... is it an `andThen`? ``` andThen : (model -> (model, cmd)) -> (model, cmd) -> (model, cmd) andThen modelToModelCmdTuple (model, cmd) = let (newModel, anotherCmd) = modelToModelCmdTuple model in ( newModel , Cmd.batch [cmd, anotherCmd] ) ``` ie. ``` model |> doStuffWithCmds -- we have `(model, cmd)` now -- but `doDifferentStuffWithCmds` needs a `model` -- so we use this combinator or whatever it is |> andThen doDifferentStuffWithCmds ```

2019-01-20T16:10:10.650300

Florencia

elmlang

general

<@Leoma> <@Ashton> Maybe you folks have some insight into it, given our previous cmd-related discussions? :slightly_smiling_face:

2019-01-20T16:11:11.651000

Florencia

elmlang

general

monadic `andThen` is `(a -> Monad b) -> Monad a -> Monad c` ie. `Json.Decode.andThen : (a -> Decoder b) -> Decoder a -> Decoder b` so ... the type signature probably checks out, right?

2019-01-20T16:13:15.652600

Florencia

elmlang

general

You seem to have extra parans in the signature

2019-01-20T16:13:46.653400

Carrol

elmlang

general

the right-associativity makes it a non-problem though I think

2019-01-20T16:14:08.654300

Florencia

elmlang

general

it's interesting there's no `Cmd.andThen` in any of our packages! :slightly_smiling_face:

2019-01-20T16:14:12.654500

Florencia

elmlang

general

`andThen` sounds right to me.

2019-01-20T16:14:13.654600

Carrol

elmlang

general

but yeah I should fix the parens

2019-01-20T16:14:28.655000

Florencia

elmlang

general

We have the same: ``` andThen fn ( model, cmd ) = let ( updatedModel, newCmd ) = fn model in ( updatedModel, Cmd.batch [ cmd, newCmd ] ) ```

2019-01-20T16:14:58.655600

Carrol

elmlang

general

<@Zona> How could have you missed this golden opportunity :troll:

2019-01-20T16:15:05.655700

Florencia

elmlang

general

I stand corrected: there's one package that does this: <https://package.elm-lang.org/packages/the-sett/elm-update-helper/1.4.1/Update2#eval>

2019-01-20T16:19:23.656300

Florencia

elmlang

general

This one too <https://package.elm-lang.org/packages/Fresheyeball/elm-return/latest/Return#andThen>

2019-01-20T16:20:02.656500

Carrol

elmlang

general

nice

2019-01-20T16:21:30.656700

Florencia

elmlang

general

I wasn't good enough with the fuzzy search :upside_down_face:

2019-01-20T16:21:37.657100

Florencia

elmlang

general

Well, now there's one more place for it :slightly_smiling_face: <https://package.elm-lang.org/packages/Janiczek/cmd-extra/latest/Cmd-Extra#andThen>

2019-01-20T16:25:56.657800

Florencia

elmlang

general

Yeah looks like `andThen` to me.

2019-01-20T16:39:56.658200

Ashton

elmlang

general

Theres probably some fancy FP word for an `andThen` that binds back onto the same type.

2019-01-20T16:51:44.660800

Ashton

elmlang

general

`map`?

2019-01-20T16:51:59.661300

Agustin

elmlang

general

No. I mean. The model/cmd tuple goes `(m -> M m) -> M m -> M m`. Lower case `m` all the way through. Unlike the normal case of going `a -> M b`, where it goes from type `a` to type `b`

2019-01-20T16:53:24.662500

Ashton

elmlang

general

oh I see what you mean

2019-01-20T16:53:55.663200

Florencia

elmlang

general

something-something-morphism :sweat_smile:

2019-01-20T16:54:05.663600

Florencia

elmlang

general

Actually, I started a conversation a few months back in here asking if `(a -> a) -> M a -> M a` is still “mapping”. And there were disagreeing voices, but I think team “yes” won.

2019-01-20T16:54:40.664800

Ashton

elmlang

general

Yeah exactly. Haha. A something-morphism.

2019-01-20T16:55:05.665200

Ashton

elmlang

general

Endo-thing.

2019-01-20T16:55:08.665500

Ashton

elmlang

general

Is this what ordinary programmers trying to look like category theorists look like? :joy:

2019-01-20T16:57:15.666500

Florencia

elmlang

general

(honestly, I love this discussion)

2019-01-20T16:57:28.666800

Florencia

elmlang

general

Hmmm I think the term might be "monomorphic" (one shape)?

2019-01-20T17:01:06.667700

Carman

elmlang

general

Although I've usually seen the term used for functions that had a concrete type like `String.map : (Char -> Char) -> String -> String`

2019-01-20T17:01:47.668300

Carman

elmlang

general

There is this theory… of the möbius… where the types become a loop.

2019-01-20T17:04:39.668800

Agustin

elmlang

general

Is there a way to replace elm-community/elm-date-extra in 0.18 in preparation for 0.19? Specifically I need the utc/posix functionality in 0.18

2019-01-20T17:09:22.671000

Jeniffer

elmlang

general

<@Jeniffer> I'm no Elm expert, but I spent many hours figuring out how to upgrade to 0.19 with all the date/time changes (I'm working on a calendar) as I talked about here: <https://discourse.elm-lang.org/t/no-longer-an-official-way-to-store-zoneless-times-in-0-19/2454> From that experience, I might suggest this library to answer your question (if I understand it correctly): <https://package.elm-lang.org/packages/justinmimbs/time-extra/latest/Time-Extra>

2019-01-20T18:08:24.674600

Erin

elmlang

general

Thanks <@Erin> ! I’ll check it out!

2019-01-20T18:38:06.675500

Jeniffer

elmlang

general

there is a lot of attempts to try to fit monads into tea e.g. <https://package.elm-lang.org/packages/Fresheyeball/elm-return/latest/Return#andThen> but it’s imo not that practical since there are some limitations

2019-01-20T20:55:00.675800

Zona

elmlang

general

it’s not. it isn’t monad

2019-01-20T20:55:54.676100

Zona

elmlang

general

not even that. even map goes a -> b

2019-01-20T20:56:43.676400

Zona

elmlang

general

not really. it doesn’t have domain and co-domain. This thing is usually called `update` in elm

2019-01-20T21:03:59.676600

Zona

elmlang

general

hello all, has anyone added the FB group plugin embedded code into their Elm code?

2019-01-20T21:07:32.677500

Chadwick

elmlang

general

I’ve added the top to my index.html and the bottom to the Elm code but I can’t get it compile

2019-01-20T21:08:22.677600

Chadwick

elmlang

general

``` div [ class "fb-group", "data-href" "<https://www.facebook.com/pettingzooocalafl>", "data-width" "280", "data-show-social-context" "true", "data-show-metadata" "false" ] [] ```

2019-01-20T21:08:29.678000

Chadwick

elmlang

general

thanks in advance for your time! :slightly_smiling_face:

2019-01-20T21:10:06.678300

Chadwick

elmlang

general

<@Chadwick> do you have an HTML page that you’re inserting your Elm app info?

2019-01-20T21:12:15.679400

Yolande

elmlang

general

yes

2019-01-20T21:12:32.679800

Chadwick

elmlang

general

just the index

2019-01-20T21:12:42.680100

Chadwick

elmlang

general

``` view : Model -> Browser.Document Msg ```

2019-01-20T21:13:35.681200

Chadwick

elmlang

general

And where does the FB JS blob get pasted?

2019-01-20T21:13:57.681800

Yolande

elmlang

general

<https://developers.facebook.com/docs/plugins/group-plugin#configurator>

2019-01-20T21:14:18.682000

Chadwick

elmlang

general

some in the head and some in the place where the div is going to be rendered

2019-01-20T21:14:32.682600

Chadwick

elmlang

general

Got it. Hmm. Maybe there’s some obstacle between their script and the DOM nodes that Elm is managing. When you inspect the div does it look like you specified?

2019-01-20T21:15:54.684800

Yolande

elmlang

general

<@Chadwick> you'll need to use <https://package.elm-lang.org/packages/elm/html/latest/Html-Attributes#attribute> for those 'data-' attributes

2019-01-20T21:15:58.685000

Earlean

elmlang

general

eg. ``` div [ class "fb-group" , attribute "data-href" "<https://www.facebook.com/pettingzooocalafl>" , attribute "data-width" "280" , attribute "data-show-social-context" "true" , attribute "data-show-metadata" "false" ] [] ```

2019-01-20T21:17:14.686300

Earlean

elmlang

general

that did the trick! awesine! thanks <@Earlean>, `html-attribute` was the keyword I was looking for :slightly_smiling_face:

2019-01-20T21:22:35.687100

Chadwick

elmlang

general

Hey, I know I’ve seen other people have this issue as well, but can’t recall what the solution was. Just upgraded an `elm 0.18` package that was at version 1.0.1 to `elm 0.19` with a new package at version 2.0 <https://package.elm-lang.org/packages/cmditch/elm-ethereum/2.0.0/> and getting this warning message `Warning! The latest version of this package is 1.0.1` Any idea how to fix this?

2019-01-20T22:21:32.688300

Talisha

elmlang

general

<@Talisha> seems fine now, I assume it was just a cache issue.

2019-01-20T23:05:28.689900

Earlean

elmlang

general

ahh, thanks for checking

2019-01-20T23:17:40.690200

Talisha

elmlang

general

Can anyone confirm that there is indeed no way to update a record in a similar way to the .accessor methods? e.g. for record `{ name : String }` you can use `.name record` to get the string, but you'd need to define your own `updateName : String -> { name : String} -> { name : String }` if you wanted to have a simple updater for it, right?

2019-01-20T23:30:48.692800

Cletus

elmlang

general

Yup

2019-01-20T23:39:39.693100

Earnest

elmlang

general

There search isn’t good enough :slightly_smiling_face:

2019-01-21T02:56:54.693600

Jin

elmlang

general

so I came up with a solution to my "problem" earlier regarding setting `RemoteData` to `Loading` not actually being tied to loading the data. instead of having the usual: `getFolder : FileContainer.ID -> Cmd Msg` you can have: `loadFolder : FileContainer.ID -> ( Model, Cmd Msg ) -> ( Model, Cmd Msg )` and then instead of doing: `({model | folder = Loading}, getFolder folderId)` you do: `(model, Cmd.none) |> loadFolder folderId`

2019-01-21T03:41:56.697100

Nana

elmlang

general

is this a common pattern?

2019-01-21T03:44:04.697600

Nana

elmlang

general

I think so yes. I found it's really nice to have complex update functions implemented as a pipe of functions. You can even create a function `andThen` that abstracts the Cmd.batch mecanism.

2019-01-21T03:46:58.699200

Karissa

elmlang

general

Something like: ``` andThen : (Model -> (Model, Cmd msg)) -> (Model, Cmd msg) -> (Model, Cmd msg) andThen function (model, cmds) = let (newModel, extraCmds) = function model in (newModel, Cmd.batch [cmds, extraCmds]) ``` That you can use like this: `(model, Cmd.none) |> andThen (loadFolder folderId) |> andThen otherFunction`.

2019-01-21T03:52:35.702500

Karissa

elmlang

general

Ah but map can also go b -> a

2019-01-21T05:23:37.703200

Agustin

elmlang

general

Its also my goto hack to convert things back to my global msg :joy:

2019-01-21T05:24:05.703400

Agustin

elmlang

general

<@Karissa> I don't like that implementation. You're somehow hinting that `andThen` is sequential, where `Cmd.batch` doesn't guarantee that one.

2019-01-21T06:43:44.704800

Niesha

elmlang

general

Or rather, I don't like the name.

2019-01-21T06:43:59.705000

Niesha

elmlang

general

Cant the domain and co-domain be the same domain? Or, cant the domain and co-domain have the same type?

2019-01-21T06:52:30.705100

Ashton

elmlang

general

I guess its just a matter of how you define it, but, a function can go `a -> a`. Thats not an issue. Maybe I dont understand functors enough, but I think endofunctors map back onto the sae domain.

2019-01-21T06:57:10.705300

Ashton

elmlang

general

no guarantees for result ordering... but i think at least they would be issued in that order?

2019-01-21T07:03:57.707100

Alysa

elmlang

general

IIRC they are issued in the reverse order. As in, FILO for a recursive tree structure

2019-01-21T07:10:19.707300

Bert

elmlang

general

Yeah the name is chosen to be consistent with Maybe.andThen etc.

2019-01-21T07:11:27.707500

Karissa

elmlang

general

The signature is, but the behavior isn't.

2019-01-21T07:51:49.707800

Niesha

elmlang

general

I'd love other name suggestions, naming is hard ^^

2019-01-21T07:54:27.708000

Karissa

elmlang

general

`map2` etc. sound appropriate here

2019-01-21T08:00:11.708200

Niesha

elmlang

general

Without changing the signature it wouldn't be consistent. And I still like to convey the idea of chaining or piping changes to Model while retaining the ability to produce Cmds. Maybe `chain` or something like that.

2019-01-21T08:16:56.709600

Karissa

elmlang

general

Hi, I wanted to test the export/import feature in the debugger but whenever I try using it I get ```Cannot Import History Looks like this history file is corrupt. I cannot understand it.``` I haven't made any changes between exporting and importing the history.

2019-01-21T08:17:10.710100

Jae