Swift闭包(Closure)
语法:
- { (parameters) ->return type in statements}
实例:采用函数实现:
- let names =["Chris", "Alex", "Ewa", "Barry", "Daniella"]
- funcbackwards(s1: String, s2: String) -> Bool {
- return s1 > s2
- }
- var reversed = sort(names, backwards)
- println(reversed)
- //sort 排序函数,backwards 通过排序规则的函数 采用闭包实现:
- var reversed = sort(names, { (s1: String, s2: String) -> Bool in
- return s1 > s2
- })
- println(reversed)
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