Which protocol must a type conform to for use in a for-in loop?
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What is the purpose of the @escaping attribute?
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Which access control level allows access within the same module?
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What does ARC stand for in Swift?
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Which keyword is used to handle errors in Swift?
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What is a computed property in Swift?
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Which operator is used for nil coalescing?
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What is the difference between weak and unowned references?
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Which collection type stores unique values?
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What is the purpose of the defer statement?
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Which protocol enables custom string representation?
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What is method overriding in Swift?
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What is the difference between @objc and @objcMembers?
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Which memory management technique prevents retain cycles?
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What is the purpose of associated types in protocols?
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