Elm

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Wikipedia-35x35.png 您可以在Wikipedia上了解到此条目的英文信息 Elm Thanks, Wikipedia.

Elm

Elm

目录

简介

Elm: Functional Frontend

Elm is a functional language that compiles to JavaScript.

功能

Elm 架构核心的三个概念:

  • Model — the state of your application
  • View — a way to turn your state into HTML
  • Update — a way to update your state based on messages

Elm is also very fast and very small when compared with React, Angular, Ember, etc.

Haskell

指南

$ curl -L -o elm.gz https://github.com/elm/compiler/releases/download/0.19.1/binary-for-linux-64-bit.gz
$ chmod +x elm
$ sudo mv elm /usr/local/bin/
$ elm --help
$ elm repl
---- Elm 0.19.1 ----------------------------------------------------------------
Say :help for help and :exit to exit! More at <https://elm-lang.org/0.19.1/repl>
-------------------------------------------------------------------------------
> [ "Haskell", "Elm" ]
["Haskell","Elm"] : List String
> [ 1.0, 2.1, 4.5, 43.1 ]
[1,2.1,4.5,43.1] : List Float
> String.length
<function> : String -> Int
> "hello"
"hello" : String
> not True
False : Bool
> round 3.14159
3 : Int
> greet name =
|   "Hello " ++ name ++ "!"
|   
<function> : String -> String
> greet "Huihoo"
"Hello Huihoo!" : String

软件包

项目

Inspired by Elm

  • elchemy Write Elixir code using statically-typed Elm-like syntax (compatible with Elm tooling)
  • Fabulous F# Functional App Development, using declarative dynamic UI
  • Elmish Elm-like abstractions for F# applications.

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