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Question 1/12: This code is valid Swift – true or false?
Hint: You may only change a struct's properties in a method if the method is marked mutating. Click to show.
mutating
struct Diary { var entries: String mutating func add(entry: String) { entries += "\(entry)" } }
Correct! This code is valid Swift.
Oops – that's not correct. This code is valid Swift.
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