swift 开篇
苹果的WWDC ,除了公布了os x 10.10 和IOS8 外,还推出了Swift。具体点击这里
代码整体风格有点像Java,也有点像javascript。
以下给出一些代码段(来自苹果官方手冊):
println("Hello, world")
“var myVariable = 42 myVariable = 50 let myConstant = 42” 摘录来自: Apple Inc. “The Swift Programming Language”。 iBooks. https://itun.es/cn/jEUH0.l
“var shoppingList = ["catfish", "water", "tulips", "blue paint"] shoppingList[1] = "bottle of water" var occupations = [ "Malcolm": "Captain", "Kaylee": "Mechanic", ] occupations["Jayne"] = "Public Relations” 摘录来自: Apple Inc. “The Swift Programming Language”。 iBooks. https://itun.es/cn/jEUH0.l
“let vegetable = "red pepper" switch vegetable { case "celery": let vegetableComment = "Add some raisins and make ants on a log." case "cucumber", "watercress": let vegetableComment = "That would make a good tea sandwich." case let x where x.hasSuffix("pepper"): let vegetableComment = "Is it a spicy \(x)?" default: let vegetableComment = "Everything tastes good in soup." } ” 摘录来自: Apple Inc. “The Swift Programming Language”。 iBooks. https://itun.es/cn/jEUH0.l
“class NamedShape { var numberOfSides: Int = 0 var name: String init(name: String) { self.name = name } func simpleDescription() -> String { return "A shape with \(numberOfSides) sides." } }” 摘录来自: Apple Inc. “The Swift Programming Language”。 iBooks. https://itun.es/cn/jEUH0.l
“class Square: NamedShape { var sideLength: Double init(sideLength: Double, name: String) { self.sideLength = sideLength super.init(name: name) numberOfSides = 4 } func area() -> Double { return sideLength * sideLength } override func simpleDescription() -> String { return "A square with sides of length \(sideLength)." } } let test = Square(sideLength: 5.2, name: "my test square") test.area() test.simpleDescription()” 摘录来自: Apple Inc. “The Swift Programming Language”。 iBooks. https://itun.es/cn/jEUH0.l