func 1 func sayHelloSwift() 2 { 3 print(“Hello, Swift!”) 4 }
1 func sum(number1:Int, number2:Int)->Int 2 { 3 return number1 + number2 4 }
return ((number1 < number2)?number1:number2)
Bool Int String
1 func getUserInfo(userId:String) -> (userName:String, userLevel:Int, photoPath:String) 2 { 3 let userName = “John” 4 let userLevel = 3 5 let photoPath = “http://www.coolketang.com/userPhoto/323sfa4.png” 6 7 return (userName, userLevel, photoPath) 8 }
abs min max filter 1 for i in (1……10).filter({
0 * 3}) 2 { 3 print(i) 4 } reduce 1 let result = (1……4).reduce(0, combine:{
1}) 2 print(result) //输出结果:10
1 let result = (1……4).reduce(0, combine:*) 2 print(result) //输出结果:24
1 enum UserLevel 2 { 3 case 总经理 4 case 区域经理 5 case 主管 6 case 业务员 7 }
1 let userLevel = UserLevel.业务员 2 switch userLevel 3 { 4 case UserLevel.总经理: 5 print(“总经理登录系统后,进入系统配置页面。”) 6 case UserLevel.区域经理: 7 print(“区域经理登录系统后,进入区域报表页面。”) 8 case UserLevel.主管: 9 print(“主管登录系统后,进入业务员任务签发页面。”) 10 case UserLevel.业务员: 11 print(“业务员登录系统后,进入报备客户页面。”) 12 default: 13 print(“无法进入客户报备页面,请重新登录!”) 14 }
1 enum Gender:UInt8 2 { 3 case Male = 1 4 case Female = 2 5 case Unknow = 3 6 }
1 struct Animal { 2 let zooName:String = “Beijing Zoo” 3 var name:String 5 func say() 6 { 7 print(“Hi, I’m (name).”) 8 } 9 }
1 class Car 2 { 3 var brand:String 4 var speed:Int 5 init() 6 { 7 self.brand = ”” 8 self.speed = 0 9 } 10 init(brand:String, speed:Int) 11 { 12 self.brand = brand 13 self.speed = speed 14 } }
1 let car = Car() 2 car.brand = “Audi” 3 car.speed = 80
class A{ 4 var level:Int 5 { 6 get 7 { 8 return self.damage / 10 9 } 10 set(newLevel) 11 { 12 self.damage = newLevel * 10 13 } 14 } }
1 class MathTool 2 { 3 class func sum(number1:Int, number2:Int) -> Int 4 { 5 return number1 + number2 6 } 7 class func multiply(number1:Int, number2:Int) -> Int 8 { 9 return number1 * number2 10 } 11 }
deinit { print(“Delete the fileManager.”) }
5 class User 6 { 7 var name:String = “John” 8 lazy var avarta:Avarta = Avarta() 9 }
1 var anythings = Any 2 anythings.append(8) 3 anythings.append(3.1415) 4 anythings.append(“hello”) 5 anythings.append((3.0, 5.0))
protocol Walking { var damage:Int{get set} func walk() }
var password:String? print(password?.characters.count)
1 class Hero 2 { 3 var damage:Int = 10 4 var level:Int = 1 5 { 6 willSet 7 { 8 print(“即将为level设置新值:(newValue)。”) 9 } 10 didSet 11 { 12 if level>oldValue 13 { 14 print(“你的英雄升级了!”) 15 } 16 else 17 { 18 print(“挑战失败,英雄未能升级。”) 19 } 20 } 21 } 22 }