Chapter 4. Collections
In the previous lesson, we looked into building Swift functions, error handling, and developing fully-featured Swift programs. We also briefly looked at a few OOP features.
In this lesson, we will work extensively with Swift's collections, such as arrays, sets, and dictionaries.
The Swift Standard Library (https://developer.apple.com/documentation/swift) is automatically imported into all Swift code, and contains basic types such as Int, Double, Bool, Optional, and more. It is primarily organized around protocols, because Swift is a Protocol-Oriented language (https://developer.apple.com/videos/play/wwdc2015/408/).
The root protocol for collections, which they all inherit from, is Sequence. All a type needs to conform to it ...
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