Elm

functional language

1. types
2. immutable
3. functors, monds ...

Elm project

• elm-repl
• elm-reactor
• elm-make
• elm-package

Elm architecture

• Model
• Update
• View

Redux

import Html exposing (..)

-- MODEL
type alias Model = { ... }

-- UPDATE
type Msg = Reset | ...
update : Msg -> Model -> Model
update msg model =
  case msg of
    Reset -> ...
    ...

-- VIEW
view : Model -> Html Msg
view model =