Suggested approach: You should already know that protocol conformances allow us to say that one type conforms to a protocol such as
Equatable, but this question is asking about conditional conformances – conforming to a protocol only if a condition is true. Make sure and give a practical example, such as
Array conforming to a
Purchaseable protocol only if it contains elements that also conform to
Estimated difficulty: Advanced
canImport()compiler condition do?
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