sketch.md

Presentation

What is Elm

• Functionnal programming language in you browser
• Uses Functional Reactive Programing

What's great about Elm

• No runtime errors
• Ultrafast feedback feedback loop

What I like about elm

• Functional
• Inferred types
• No runtime error
• Semantic version enforced on comminity libraries
• Time traveling debugger

elm package

elm package diff evancz/elm-html 3.0.0 4.0.2

Comparing evancz/elm-html 3.0.0 to 4.0.2...
This is a MAJOR change.

------ Changes to module Html.Attributes - MAJOR ------

    Removed:
        boolProperty : String -> Bool -> Attribute
        stringProperty : String -> String -> Attribute


------ Changes to module Html.Events - MINOR ------

    Added:
        type alias Options =
            { stopPropagation : Bool, preventDefault : Bool }
        defaultOptions : Html.Events.Options
        onWithOptions : String -> Html.Events.Options -> Json.Decode.Decoder a -> (a -> Signal.Message) -> Html.Attribute

What should I talk about

• How do we use elm . Elm.embed()

Where Elm fall short

• Some stuff is not baked in: (set focus )
• Javascript Interop is a bit painful

Tools

elm-format

• Format your source code for you.
• elm reactor
• elm live

Great resources

• Pragmatic Studio screencast

Don't forget to bring water