Free Design patterns lessonsDesign patterns · Stage 1 · Structuring objects · Step 2
Decorator
Adding behaviour to an object by wrapping it in another with the same interface, instead of subclassing for every combination. About 12 minutes.
What is the difference in intent between decorator and proxy, which are structurally similar?
- AA decorator adds behaviour; a proxy controls access to the object
- BA decorator changes the interface; a proxy keeps it
- CThere is no difference
Show the answer
A decorator adds behaviour; a proxy controls access to the object. Same shape, different purpose.
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