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Swift · Interview Question

What is protocol composition in Swift?

Detailed answer, explanation and code for this interview question. Ideal for Swift interview preparation, coding rounds and viva questions.

Difficulty: HardType: MCQ

Question Overview

Subject

Swift

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Problem Statement

What is protocol composition in Swift?

Explanation

Protocol composition uses the & operator (for example `Dog & Pet`) to indicate that a type conforms to multiple protocols. This enables flexible type constraints and polymorphism by combining behaviors.

Practice Sets

This question appears in the following practice sets:

Advanced Types & Protocols

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What is protocol composition in Swift? - Swift | Preplance Interview Prep | Preplance

Master Interviews
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What is protocol composition in Swift?

Problem Statement

Explanation

Practice Sets

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Master Interviews Anywhere, Anytime

What is protocol composition in Swift?

Problem Statement

Explanation

Practice Sets

Related Questions

What is the difference between `let` and `var` in Swift?

What does the `?` after a type name signify in Swift, e.g., `Int?`?

Which statement is true about `struct` vs `class` in Swift?

What is the purpose of a `guard` statement in Swift?

Which of these best describes a closure in Swift?

More from Swift

Master Interviews
Anywhere, Anytime