Delegates: Difference between revisions
Content added Content deleted
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subclass:#Thingy |
subclass:#Thingy |
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instanceVariableNames:'' |
instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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thing |
thing |
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^ 'thingy implementation' |
^ 'thingy implementation'</lang> |
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</lang> |
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Definition of the delegator: |
Definition of the delegator: |
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<lang smalltalk> |
<lang smalltalk> |
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subclass:#Delegator |
subclass:#Delegator |
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instanceVariableNames:'delegate' |
instanceVariableNames:'delegate' |
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classVariableNames:'' |
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poolDictionaries:''. |
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delegate:something |
delegate:something |
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^ delegate |
^ delegate |
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perform:#thing |
perform:#thing |
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ifNotUnderstood:'default implementation'. |
ifNotUnderstood:'default implementation'.</lang> |
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</lang> |
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Sample use: |
Sample use: |
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<lang smalltalk> |
<lang smalltalk> |
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d delegate:(Thingy new). |
d delegate:(Thingy new). |
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d operation. |
d operation. |
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-> 'thingy implementation' |
-> 'thingy implementation'</lang> |
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</lang> |
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=={{header|Swift}}== |
=={{header|Swift}}== |
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