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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”
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Question 1 of 5


Test is Based on this Article
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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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