30 lines
678 B
Ruby
30 lines
678 B
Ruby
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# An adapter helps two incompatible interfaces to work together. This is the
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# real world definition for an adapter. Interfaces may be incompatible but the
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# inner functionality should suit the need. The Adapter design pattern allows
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# otherwise incompatible classes to work together by converting the interface
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# of one class into an interface expected by the clients.
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class Adaptee
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def walk
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'walk_as_adaptee'
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end
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end
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class Adaptor
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attr_reader :adaptee
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def initialize
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@adaptee = Adaptee.new
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end
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def walk
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adaptee.walk + ' and_sing_song_as_adaptor'
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end
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end
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# Usage
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adaptor = Adaptor.new
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adaptor.walk # => walk_as_adaptor and_sing_song_as_adaptor
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