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Swift Protocols — The Art of Making Promises 🤝
TL;DR: A quick tour of Swift protocols as contracts that define required properties and methods without implementation. It shows how protocols let diverse types conform to a shared interface to avoid duplicating similar functions.
Protocols define a promise: any conforming type must expose certain properties and methods. They don’t implement behavior themselves, only declare requirements. This enables writing generic code that operates on any conforming type, reducing the need for multiple specialized functions. The example uses a Fighter protocol with name, speed, and two travel-related methods, illustrating how different fighters can share functionality through a common interface.
Question for the room: What challenges have you faced when refactoring to use protocols for shared behavior, and how did you address them?
— via dev.to
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