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null nil in Swift - Stack Overflow 8 Swift’s nil is not the same as nil in Objective-C In Objective-C, nil is a pointer to a non-existent object In Swift, nil is not a pointer—it is the absence of a value of a certain type Optionals of any type can be set to nil, not just object types NULL has no equivalent in Swift nil is also called nil in Swift Nil has no equivalent
ios - Swift - encode URL - Stack Overflow 0 SWIFT 4 2 Sometimes this happened just because there is space in slug OR absence of URL encoding for parameters passing through API URL
swift2 - Swift: guard let vs if let - Stack Overflow The Swift Docs on Control Flow explain the idea behind that: Using a guard statement for requirements improves the readability of your code, compared to doing the same check with an if statement
Swift: print () vs println () vs NSLog () - Stack Overflow Back in Swift 1 x, print did not add newline characters at the end of the printed string, whereas println did But nowadays, print always adds the newline character at the end of the string, and if you don't want it to do that, supply a terminator parameter of "" NSLog: NSLog adds a timestamp and identifier to the output, whereas print will not