structResolution{ var width = 0 var height = 0 } classVideoMode{ var resolution = Resolution() var interlaced = false var frameRate = 0.0 var name: String? }
for index in1...5 { println("\(index) times 5 is \(index * 5)") } // 1 times 5 is 5 // 2 times 5 is 10 // 3 times 5 is 15 // 4 times 5 is 20 // 5 times 5 is 25
var emptyString = ""// empty string literal var anotherEmptyString = String() // initializer syntax // these two strings are both empty, and are equivalent to each other