swift - 娱乐一下

let array = ["one","two","three","four","five"]

//老版本 : 没缩写前的闭包
var result = sort(array,{(s1 : String,s2 : String) -> Bool in return s1 < s2})
//老版本 : 终极缩写后的闭包
result = sort(array,<)

var array = ["one","two","three","four","five"]
//目前 : 没缩写前的闭包
array.sort(by: {(s1 : String,s2 : String) -> Bool in return s1 < s2})
//目前 : 终极缩写后的闭包
array.sort(){$0 < $1}