There are a few standard design patterns that you will use in coding mobile applications. These are not necessarily specific to Swift or Apple, but are general templates you can utilize in your programming endeavors.
The above diagram references an example of MVC, delegation and notification. From Apple's Using Design Patterns .
 Start Developing iOS apps today - Using Design Patterns https://developer.apple.com/library/mac/referencelibrary/GettingStarted/RoadMapOSX/books/StreamlineYourAppswithDesignPatterns/StreamlineYourApps/StreamlineYourApps.html
iOS Core Competencies - https://developer.apple.com/library/ios/documentation/General/Conceptual/DevPedia-CocoaCore/
iOS Design Patterns - http://www.raywenderlich.com/46988/ios-design-patterns