swift3.0 for循环

概述let numberList = [11, 12, 13, 14, 15,16] for item in numberList{ print(item) } for item in numberList.enumerated(){ print(item.offset

let numberList = [11,12,13,14,15,16]                for item in numberList{            print(item)        }                for item in numberList.enumerated(){            print(item.offset,item.element)        }                for (index,item) in numberList.enumerated().reversed() {            print(index,item)        }                for i in 0..<5 {            print("--",numberList[i])        }                for i in 0...5{             print("==",i)        }                for i in (0...5).filter({ i in i % 2 == 1}) {            print("***",i)        }                for i in (0...5).filter({ 赠送一种数组截取方式 > 2}) {            print("###",i)        }

array(groups![startIndex...endindex])

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