Interface Segregation and Objective C Delegates

The fourth principle of the SOLID principles is the Interface Segregation Principle. According to Wikipedia, the authority on most truth, this principle states that “no client should be forced to depend on methods it does not use”. This principle can help in cleaner and more intuitive designs of protocols and delegates.Most Objective C introductory tutorials introduce developers to the idea of delegates. For example, if you have a table view controller and table view cells, the table view cells can send messages to the table view controller using a delegate.

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