Created
March 14, 2017 20:58
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Swift ?. Operator
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| func giveMeAStringMaybe(_ maybe: Bool) -> String? { | |
| return maybe ? "Yes!" : nil | |
| } | |
| let str1: String? = giveMeAStringMaybe(true) | |
| let lowercaseStr1: String? = str1?.lowercased() | |
| print(lowercaseStr2) // prints: "yes!" | |
| let str2: String? = giveMeAStringMaybe(false) | |
| let lowercaseStr2: String? = str2?.lowercased() | |
| print(lowercaseStr2) // prints: nil |
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