I guess you can simply return Sub.none instead in your subscription function when it is paused. If you choose to do this way, then you can revert Tick handler in your update function. subscriptions : Model -> Sub Msg subscriptions model = if model.paused then Sub.none else Time.every second Tick
Elm added arrays in 0.12.1, and the implementation was massively overhauled in 0.19 to improve correctness and performance. import Array myArray = Array.fromList [1..5] myItem = Array.get 2 myArray Arrays are zero-indexed. Negative indices are not supported currently (bummer, I know). Note that myItem : Maybe Int. Elm does everything it can to avoid runtime … Read more
You can manually bind to the keydown event with the generic on handler. Elm does currently not support onKeyDown handlers out of the box – but they are planned in the future. It looks like the spec is moving away from event.keyCode and towards event.key. Once this is supported in more browsers, we may add … Read more
Use Platform.Cmd.batch (docs): init : (Model, Cmd Msg) init = ( Model “” [] , Cmd.batch [fetchCmd, Ports.messageToJs “Hello JS”)] )
An updated and simplified version of @wintvelt’s answer for Elm v0.18 is: delay : Time.Time -> msg -> Cmd msg delay time msg = Process.sleep time |> Task.perform (\_ -> msg) with the same usage
I’m not intimately familiar with Elm, but I’ve looked into it a bit and I’m pretty familiar with Reason, so I’ll give it a shot. I’m sure there will be inaccuracies here though, so please don’t take anything I say as fact, but use it instead as pointers for what to look into in more … Read more
Both force you to use a more declarative/functional programming style than pure JS. ClojureScript is more like a JS replacement, whereas Elm is more like a replacement for the entire web development stack (HTML/CSS/JS). Other differences: Elm syntax is much more Haskell-like ClojureScript is much closer to traditional Lisp syntax Elm is highly optimized for … Read more
First of all, as the author of the TabbedPages container, I’d like to apologize for the complexity. That component is really meant as an experiment to see what is possible using Elm and the Elm Architecture along with inline styles. In short, the idea of the component is to allow for a tabs+swipeable pages components … Read more
You can use the attribute function instead. view … = tr [ attribute “data-row” “1” ]
The focus function in the elm-lang/dom package is used to set focus with a Task (without using any ports or JavaScript). Internally it uses requestAnimationFrame to ensure any new DOM updates are rendered before it tries to find the DOM node to focus on. An example use: type Msg = FocusOn String | FocusResult (Result … Read more