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Test: Swift - Nil Coalescing Operator
1. var city: String?; display = city ?? “No City” - what is the value of display?
Results Congratulations! Correct Answer. You Answered: None. If you took the test, your answer will show up here. Correct Answer: No city Explanation The Nil Coalescing Operator (??) returns the default value (to its right) if the value to its left is nil. Since city has not been set to a non-nil value, display will get “No City”Take the Test Take the complete test on this topic. You will be able to review answers to questions and get a test score.
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This article talks about the Nil Coalescing Operator (??) in Swift.
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Test on Nil Coalescing Operator for Optionals.
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