c++ 的 functor实现，支持c函数和成员函数，使用非常简单，源码带使用例子

包含头函数：#include "Functor.h"

初始化c函数指针　　Functor< int, int, int, int, int, int > fun1( &FuncSum )

　　printf( "fun1: d\n", fun1.Exec( 1, 2, 3, 4, 5 ) )

　　Functor< int, int, int, int, int, int > fun2

　　fun2 = Functor< int, int, int, int, int, int >( &FuncSum )

　　fun2 = fun1



成员函数初始化：

　　Fool myObj

　　fun3 = Functor< int, float, float >( &myObj, &Fool::CallMethod )

　　if ( fun3 )

　　{

　　　　printf( "fun3 is not null......\n" )

　　}

　　else

　　{

　　　　printf( "fun3 is null......\n" )

　　}

　　if ( fun3 )

　　{

　　　　printf( "fun3 result is: d\n", fun3( 1.2f, 2.1f ) )

　　}-c++ implementation of the functor, support c functions and member functions, using a very simple source code with the use of examples include the first function:# include " Functor.h"　initialization c function pointer Functor < int, int, int, int, int, int >　fun1 (&　FuncSum)　printf ( " fun1:　d \ n" , fun1.Exec (1, 2, 3, 4, 5))　Functor < int, int, int, int, int, int>　fun2　fun2 = Functor < int, int, int, int, int, int>　(&　FuncSum)　fun2 = fun1　member function to initialize: Fool myObj　fun3 = Functor < int, float, float>　(&　myObj, &　Fool:: CallMethod)　 if (fun3) (printf ( " fun3 is not null ...... \ n" ) ) else (printf ( " fun3 is null ...... \ n" ) ) if (fun3) ( printf ( " fun3 result is:　d \ n" , fun3 (1.2f, 2.1f)) )