Created
September 26, 2016 01:35
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guard let vs. if nil
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| //: guard let example | |
| func printifnonnil(text: String?) { | |
| if text == nil { | |
| return | |
| } | |
| // syntatically, unwrapping still required since text is still an optional | |
| print(text!) | |
| } | |
| func printguard(text: String?) { | |
| guard let text = text else { | |
| return | |
| } | |
| // guranteed that text is not an optional | |
| print(text) | |
| } | |
| printifnonnil(text: "hello") | |
| printifnonnil(text: nil) | |
| printguard(text: "hello") | |
| printguard(text: nil) |
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