Composing types in Swift

www.swiftbysundell.com

Composition is a super useful technique that lets us share code between multiple types in a more decoupled fashion. It's often posed as an alternative to subclassing, with phrases like "Composition over inheritance" - which is the idea of composing functionality from multiple individual pieces, rather than relying on an inheritance tree. This week, let's take a look at a few situations in which composition can be used with structs, classes and enums in Swift.

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