October 2017
Intermediate to advanced
210 pages
5h 32m
English
Content preview from Swift 4 Protocol-Oriented Programming - Third Edition
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Understanding the problem
There are times where we need to perform an action in one or more parts of our code when some event happens in another part of our code. This is a very common requirement with most modern UI frameworks, where we wish to be notified when the user has had some interaction with our user interface.
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