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Article Written By:
Johann Dowa

Library Providing An NSNotificationCenter Alternative For Handling Multiple Delegates

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Handling multiple delegates in Objective-C is usually done using NSNotificationCenter, but here’s a library from Jacob Jennings that provides an easy to implement alternative with some message handling advantages.

Rather than the usual NSNotificationCenter approach this library uses NSProxy, takes a list of target delegates and implements its own message handling.

As the readme states here is how :

  1. Messages with a void return type are sent to all target delegates
  2. Messages with non-void return types are send to the first delegate in the list which responds to the selector.

You can find HTDelegateProxy on Github here with examples of how to use.

A very easy to use library that provides a great alternative to using NSNotificationCenter.


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