Protocol_Delegation.md

Swift Protocol & Delegation Interview Questions (Beginner to Advanced)

Beginner Level

1. What is a protocol in Swift?
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2. How do you define a protocol?
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3. Can a protocol have methods and properties?
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4. How do you make a class or struct conform to a protocol?
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5. What is the delegation pattern in iOS?
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6. How do you use delegation in UIKit?
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7. Can protocols have default implementations?
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8. What is the difference between a class and protocol conformance?
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9. How do you use optional methods in a protocol?
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10. What is protocol inheritance?
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Intermediate Level

1. How do you implement a custom delegate in Swift?
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2. What is a protocol extension in Swift?
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3. How do you use associatedtype in protocols?
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4. What are the benefits of protocol-oriented programming in Swift?
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5. What is protocol composition?
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6. Can protocols be generic in Swift?
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7. What is the difference between a delegate and a data source?
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8. How do protocols improve code flexibility and maintainability?
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9. How do you handle protocol conformance with enums?
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10. Can protocols have initializer requirements?
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Advanced Level

1. How does Swift use protocols for dependency injection?
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2. What are Self requirements in protocols?
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3. How do you use dynamic dispatch with protocols in Swift?
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4. How does protocol inheritance impact performance?
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5. How do protocols enforce design constraints in Swift?
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6. Can protocols conform to other protocols?
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7. How does Swift's Equatable protocol work under the hood?
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8. How can protocols simplify unit testing in Swift?
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9. How do you create a mock class that conforms to a protocol?
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10. What are some common pitfalls when working with Swift protocols?
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