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Related Images for Visitor Design Patterns
One of the behavioralpatterns described by the gangoffour in the book designpatterns.
The visitor design pattern allows you to add operations to classes without changing the classes.
Procedure: discuss with and show came in.and they all had "stories" painted on them with bands of designs.
I have been trying to memorise gang of four design patterns recently, and came across the strategy and visitor patterns.
Represent an operation to be performed on the elements of an object structure.