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1.代码示例
#include <iostream>
#include <string>
#include <pthread.h>
#include <functional>
using namespace std;
typedef void (*MyFun)(int n, string str);
typedef std::function <void(int n, string str)> Func;static void Test(int n, string str){cout << "n = "<< n << " str = " << str <<endl;
}static void Test1(Func &cb){//左值引用cb(55555,"nnnnnn");
}static void Test2(Func &&cb, string buf){//右值引用cb(66666,buf);
}int main(){MyFun m1;Func cc;//callback 1m1 = Test;m1(111,"1233" );//callback 2auto func3 = std::bind(Test, std::placeholders::_1, std::placeholders::_2);func3(2222, "Hello");//callback 3cc = Test;cc(44444,"mmmmmm");Test1(cc);//左值引用//callback 4string buffer = "Hello callback";Test2(std::bind(Test, std::placeholders::_1, std::placeholders::_2), buffer);//右值引用string buf = "Hello callback 2222222";Test2(Test, buf);//右值引用return 0;}
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