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/* * ========================================================================= * * FileName: std_bind.cpp * * Description: * * Version: 1.0 * Created: 2018-01-19 13:53:26 * Last Modified: 2018-01-19 14:21:47 * Revision: none * Compiler: gcc * * Author: zt () * Organization: * * ========================================================================= */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define _CRT_SECURE_NO_WARNINGS #include #include #include #include #include #include void func ( int x, int y ) { std::cout << x << " " << y << std::endl; } void mytest() { func ( 1, 2 ); std::bind ( func, 11, 12 ) (); std::bind ( func, std::placeholders::_1, 22 ) ( 21 ); // std::placeholders 表示的是占位符 // std::placeholders::_1是一个占位符，代表这个位置将在函数调用时，被传入的第一个参数所替代。 std::bind ( func, 32, std::placeholders::_1 ) ( 31 ); std::bind ( func, 42, std::placeholders::_2 ) ( 41, 42 ); std::bind ( func, std::placeholders::_1, std::placeholders::_2 ) ( 51, 52 ); std::bind ( func, std::placeholders::_3, std::placeholders::_2 ) ( 61, 62, 63 ); //std::bind(func, 2, std::placeholders::_2)(1); // err, 调用时没有第二个参数 return; } int main ( int argc, char* argv[] ) { ( void ) argc; ( void ) argv; mytest(); sleep ( 1 ); return 0; }