Swif (vi) Swift closures

////Main.swift//Lessonswiftsix////Created by Keyan on 15/9/13.//Copyright (c) 2015 Keyan. All rights reserved.//Import Foundation/*(1) Closure concept and classification self-contained function code block global function (famous) closure expression (anonymous)--can capture the context of a German constant or variable nesting function (*)*//*(2) The syntax of the closure expression, func funcName (parameter), return value type {EXECUTE statement} {(parameter)--return value type in execute statement}*/Let SayHello={println ("Hello World")}sayhello () Let add: (Int,int)->int ={(a:int,b:int)->intinch    returnA +b}println (Add (3,5))/*(3) Closure expression callback usage*/func Showarray (array: [Int]) { forXinchArray {print ("\ (x),")} println ()}func Bubblesort (CMP: (int,int)-int,inout array: [INT]) {Let CNT=Array.count for vari =1;i<cnt; i++ {         for varj =0; J < cnt-i;j++ {            if(CMP (array[j],array[j+1]) == -1) {Let T=Array[j] Array[j]= array[j+1] Array[j+1] =T} }}}varArray = [ -,3,2, -,8]//Showarray (Array)//Let intcmp = {//(A:int,b:int), Int in//if a>b{//return-1//        //    }//else If a < b {//return 1//    }//Else//    {//return 0//    }//}//Swift-specific type inferenceShowarray (Array)/*(4) Closure-expression optimization*///Bubblesort (&array,{////(A, B) in//Let x = $10,y = $//if x>y{//return-1//        //    }//else if x < y {//return 1//    }//Else//    {//return 0//    }//})Showarray (Array)/*(5) trailing closures*/Bubblesort ({//(A, b) inLet X = $0%Ten, y = $1%Ten    ifX>y{return-1            }    Else ifX <y {return 1    }    Else    {        return 0    }       }    , &Array)//Sort (&array,{////(A:int,b:int), Bool in////Return a< b//Return< $//    //})//trailing closuresSort (&Array) {    //(A:int,b:int), Bool in//return a < b    return$0< $1}showarray (Array)/*nested Functions*///func swapvalue (inout a:int,inout b:int)//{//Let t = a//A = b//B = t//}func bubblesortfunc (inout array: [Int]) {Let CNT=Array.count//put into internal nested functions acting on the insidefunc swapvalue (inout a:int,inout b:int) {Let T=a A=b b=T} for vari =1;i<cnt; i++ {         for varj =0; J < cnt-i;j++ {            if(array[j]>array[j+1]){//Let t = array[j]//Array[j] = array[j+1]//array[j+1] = tSwapvalue (&array[j], &array[j+1])            }        }    }}varArray1 = [5, +,Ten,2,3]bubblesortfunc (&array1) Showarray (array1)/*(7) Closed packet Capture value*///func Getincfunc (inc:int)-(Int)-int{//func Incfunc (v:int), Int {//return 10+v//    }//return Incfunc//}Func Getincfunc (Inc:int), (INT)int{varMT =Tenfunc incfunc (v:int)-Int {MT++returnINC + MT +v}returnIncfunc}let incFunc1= Getincfunc (3) Let IncFunc2= Getincfunc (3) println (INCFUNC1 (Ten)) println (IncFunc1 (Ten)) println (INCFUNC2 (Ten))

Swif (vi) Swift closures