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@hden(Haokang Den)inToreta, Inc.

簡易メソッドチェーン

Last updated at Posted at 2013-01-22

各メソッドの最後に@(=this)を返すだけです

worker.coffee
class Worker
  doThis: () ->
    console.log 'this'
    return @
  doThat: () ->
    console.log 'that'
    return @
  doSomethingElse: () ->
    console.log 'somethingelse'
    return @

worker = new Worker()
worker.doThis()
      .doThat()
      .doSomethingElse()

実行してみると

$ coffee worker.coffee 
this
that
somethingelse
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