Swift Object ModelLesson 29Free preview

Swift Protocols

This lesson is part of Swift · All levels

Summary

This lesson reviews the Protocols which are the blueprint of the contract methods, properties, and other requirements in Swift. Protocols can be adopted by class, struct, or enum. Protocol-Oriented Programming is Swift's core philosophy that allows highly flexible feature composition without the weakness of dual inheritance.

Key points

Protocol defines the interface contract that must be fulfilled by the type that adopts it
Defined by the keyword 'protocol'
Can be adopted by Struct, Class, and Enum at once
Support for default implementation through Protocol Extensions

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