swift syntax, check for nil before unwrapping

Question

I find checking nil before unwrapping is lengthy, is there a shorter way? I'm new to Swift, thanks

     func loadSettings(defaults: UserDefaults) {
       if defaults.string(forKey: "driverId") != nil {
         driverId = defaults.string(forKey: "driverId")!

       }
     }

This is all clearly explained with lots of examples in the Optionals section of [The Swift Programming Language](https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/) book. — rmaddy, Nov 03 '16 at 15:16

Bogdan Farca · Accepted Answer · 2016-11-03T15:19:59.170

0

Sure:

if let driverId = defaults.string(forKey: "driverId") {
    // use driverId
}

edited Nov 03 '16 at 15:19

answered Nov 03 '16 at 15:14

Bogdan Farca

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score 0 · Answer 2 · answered Nov 03 '16 at 15:14

0

 func loadSettings(defaults: UserDefaults) {
    if let driverId = defaults.string(forKey: "driverId"){
     // process driverId
    }
 }

answered Nov 03 '16 at 15:14

Juri Noga

4,313
7
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swift syntax, check for nil before unwrapping

2 Answers2