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15 lines
344 B
Markdown
15 lines
344 B
Markdown
# Decorator
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## Purpose
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To dynamically add new functionality to class instances.
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## Examples
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* Zend Framework: decorators for `Zend_Form_Element` instances
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* Web Service Layer: Decorators JSON and XML for a REST service (in this case, only one of these should be allowed of course)
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## UML Diagram
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