Thanks all. I'm still somewhat confused. The information architecture of the elm website is certainly not helping :)
One would expect info about an operator to be somewhere under elm-lang.org/docs/* However, after reading http://package.elm-lang.org/packages/elm-lang/core/4.0.0/Platform-Cmd it appears that (!) is not an "all-purpose" operator. Since there isn't any further explanation regarding (!) on this page (apart from the type description), I decided to see if there is anything else on this page that can help me understand Cmd (in general) Here we go: "Note: Do not worry if this seems confusing at first! As with every Elm user ever, commands will make more sense as you work through the Elm Architecture Tutorial <http://package.elm-lang.org/packages/elm-lang/core/4.0.0/Platform-Cmd> and see how they fit into a real application!" Unfortunately, that link goes nowhere. Fortunately, I know where to find the Elm Architecture Tutorial (now just a chapter in the guide under another subdomain because it's a gitbook...). Nowhere in the guide is there a clear explanation of what a Cmd, a Msg or a Sub is. (Oh, a Msg is not anything. It's just a user defined type. But in all the examples it follows the same abbreviation pattern as Cmd and Sub, so it looks like an official thing. Very confusing for a beginner!) Anyway, I typed the following in the REPL: > "" ! [] ("",{ type = "node", branches = [] }) : ( String, Platform.Cmd.Cmd a ) Not sure what to do with that... I guess this is not really a question anymore. I'm just venting a bit of frustration :) /Peter On Monday, May 16, 2016 at 12:21:18 AM UTC+2, Peter Bruinsma wrote: > > For example, in TodoMVC: > > init : Maybe Model -> ( Model, Cmd Msg ) > init savedModel = > Maybe.withDefault emptyModel savedModel ! [] > > > > > > > > -- You received this message because you are subscribed to the Google Groups "Elm Discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
