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Task/Delegates/CoffeeScript/delegates-1.coffee
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Task/Delegates/CoffeeScript/delegates-1.coffee
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class Delegator
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operation: ->
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if @delegate and typeof (@delegate.thing) is "function"
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return @delegate.thing()
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"default implementation"
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class Delegate
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thing: ->
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"Delegate Implementation"
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testDelegator = ->
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# Delegator with no delegate.
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a = new Delegator()
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console.log a.operation()
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# Delegator with delegate not implementing "thing"
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a.delegate = "A delegate may be any object"
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console.log a.operation()
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# Delegator with delegate that does implement "thing"
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a.delegate = new Delegate()
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console.log a.operation()
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testDelegator()
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