Swift-functions, function pointers

  main.swift//  functiontest-04//import foundationprintln ("function test!") TestFunction ()

The functiontest.swift//functiontest-04//import foundation//function begins with a Func representation of a function//parameter and parameter, and//V1 represents the parameter: String representing the type of the parameter//-& Gt Represents the return value Stringfunc testconcat (v1:string, v2:string)->string{return "\ (v1) and \ (v2)";} The parameter is 0, the return value is three func getInfo (), (string,string,string) {return ("Welcome", "Come", "Baidu");//is a meta-ancestor}// The label is the advantage of OC Swift has brought the label inside OC to the Func testConcat2 (v1:string, Andvalue v2:string,andnumber v3:int)->string{return "\ (v1) A nd \ (v2) and \ (v3);}    Func testfunctioninfunction ()->int{var y = 10;    Add is a function of the LUA scripting language func Add () {//var y = 1; The following y will choose Zui y + = 5;    } add (); return y;} This is a function return value is (Int->int) func getfuncpointer (), (int->int) {func addone (num:int)->int {return nu    m+1; }//Returns the address of a function return addone;}        Func testfunction () {println ("Start test function");    Let V = testconcat ("Hello", "World");        println ("V is \ (v)");    Andvalue: called a label Let V2 = TestConcat2 ("Baidu", Andvalue: "Baidu recruitment", andnumber:100); println ("V2 is\ (v2) ");    Let (v3,v4,v5) = GetInfo ();            println ("v3\ (v3) v4\ (v4) v5\ (V5)");        Let V6 = Testfunctioninfunction ();        println ("V6 Is\ (V6)");    function pointer var funcpointer = Getfuncpointer ();    var V7 = funcpointer (199);        println ("V7 is \ (V7)");    Take the function address/pointer as the parameter var arr = [20,10,333,4,43,33]; var V8 = Hasanymatch (Arr,lessthanten);}        Func Hasanymatch (list: [Int],condition:int, Bool), bool{for item in list{if (condition (item))        {return true;    }} return false; }func Lessthanten (number:int)->bool{return number <= 10;}

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Swift-functions, function pointers