Protocol _____ types allow protocols to define placeholder types.
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The _____ attribute allows functions to be inlined across module boundaries.
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Explain the difference between classes and structures in Swift.
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What is ARC (Automatic Reference Counting) and how does it work?
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Explain Swift's concurrency model with async/await and actors.
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What is the correct way to print "Hello World" in Swift?
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Which symbol is used for single-line comments in Swift?
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What is an optional in Swift?
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Which operator is used to unwrap an optional safely?
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What is the default access level in Swift?
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Which keyword is used to define a function in Swift?
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What is the correct syntax for an if statement in Swift?
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Which collection type is ordered in Swift?
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What is the correct way to create an empty array of integers?
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What is the difference between a class and a struct in Swift?
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