Protocols

Lesson in the Swift & Swift UI Roadmap · Stage 21: Protocols

Last updated 14 September 2026

What is Protocols?

A protocol in Swift defines a blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality. Classes, structures, and enumerations can then adopt these protocols, providing concrete implementations for the requirements specified by the protocol. This allows you to define a common interface for different types, enabling polymorphism and code reusability.

Study this in the interactive course See the whole Swift & Swift UI roadmap

Free resources to learn Protocols

Official docsProtocols
ArticleSwift Protocols
ArticleThe Power of Protocols in Swift
VideoSwift Protocols - An Introduction
VideoWhat is a Protocol in Swift and SwiftUI View protocol | Swift Basics #17

Protocols: common questions

Can I learn Protocols in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Protocols in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Protocols tutorial for beginners?

It is lesson 46 of 156 in the free Swift & Swift UI roadmap, in stage 21, Protocols. If you are new to Swift & Swift UI, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.