Why design pattern is very important in iOS development?

1.	Why design pattern is very important in iOS development?
Answer» Why DESIGN pattern is very important in iOS development? It is ONE of the important aspects in iOS development. Design patterns are important in software design because we knows that design patterens are reusable solution to MANY of the common problems. There are some models AVAILABLE that helps in writing CODE in simple way to comprehend and reuse. And one of the most popular design trend in Cocoa are given below:- (1)Creational:-Singleton (2)Structural:-Decorator, Adapter, Facade (3)Behavioral:-Memento, Observer

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