C++ bind

struct MyStruct

{

void add(int a)

{

cout << a << endl;

}

void add2(int a,int b)

{

cout << a +b<< endl;

}

void add3(int a, int b,int c)

{

cout << a + b +c<< endl;

}

};

using namespace std::placeholders;

MyStruct struct1;

//auto自动变量，地址，函数指针，bind绑定

//第一个参数引用内部函数，绑定一个实体对象，

auto func = bind(&MyStruct::add, &struct1, _1);

auto func2 = bind(&MyStruct::add2, &struct1,_1, _2);