在线时间:8:00-16:00
迪恩网络APP
随时随地掌握行业动态
扫描二维码
关注迪恩网络微信公众号
// 柯里化 // http://www.jianshu.com/p/6eaacadafa1a Swift 2.0 柯里化方法 (废弃) // http://www.swifthumb.com/thread-16079-1-1.html Swift 3.0 柯里化常用方法推荐 // http://www.ruanyifeng.com/blog/2012/04/functional_programming.html 函数式编程 /* Curried function declaration syntax func foo(x: Int)(y: Int) is of limited usefulness and creates a lot of language and implementation complexity. We should remove it.
(函数的 currying 特性的使用场景并不大,但他会增加很多语言的复杂性,所以需要删除它) */
1 class Currying 2 3 { 4 5 // uncurried:普通函数 6 7 // 接收多个参数的函数(与类相关的函数,统称为方法,但是这里就直接说函数了,方便理解) 8 9 func add(a: Int, b: Int, c: Int) -> Int{ 10 11 print("\(a) + \(b) + \(c)") 12 13 return a + b + c 14 15 } 16 17 18 19 // curried:柯里化函数 --> 本质函数式编程思想 20 21 func addCur(_ a: Int) -> (Int) -> (Int) -> Int{ 22 23 return { 24 25 b in 26 27 return { 28 29 c in 30 31 a + b + c 32 33 } 34 35 36 37 } 38 39 } 40 41 } 42 43 44 45 let curry = Currying() 46 47 var number = Currying.addCur(curry)(12)(23)(12) 48 49 print(number) 50 51 52 53 // NO.2 54 55 let datePrint:(Int)->(Int)->(String)->Void = 56 57 { 58 59 month in 60 61 print("\(month)月") 62 63 return{ 64 65 day in 66 67 print("\(day)日") 68 69 return{ 70 71 action in 72 73 print("\(action)") 74 75 } 76 77 } 78 79 } 80 81 let actionPrint = datePrint(2016)(11) 82 83 actionPrint("写详细") 84 85
|
请发表评论