std::bind1st std::bind2nd boost::bind

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#include <iostream>#include <string>#include <functional>#include <vector>#include <boost/typeof/typeof.hpp>#include <boost/assign.hpp>#include <boost/bind.hpp>using namespace boost::assign;void print(int v){std::cout << v <<" ";}void print2(int v,int y){std::cout << v + y <<" ";}// binary_function 的三个参数为 第一个参数类型，第二个参数类型，函数的返回值类型struct test2:public std::binary_function<int, std::string,void> {void operator()(int x,std::string y)const{std::cout << x << y << " ";}};struct test1:public std::binary_function<std::string,int, void> {void operator()(std::string y,int x)const{std::cout << x << y << " ";}};int main(){std::vector<int> v;boost::assign::push_back(v),2,1,3,7,5,6;std::for_each(v.begin(),v.end(),print);std::cout << std::endl;std::for_each(v.begin(),v.end(),std::bind1st(test1(),"test"));std::cout << std::endl;std::for_each(v.begin(),v.end(),std::bind2nd(test2(),"test"));std::cout << std::endl;std::cout << std::count_if(v.begin(),v.end(),std::bind1st(std::greater<int>(),10)) << std::endl;std::for_each(v.begin(),v.end(),boost::bind(print2,10,_1));std::cout << std::endl;std::for_each(v.begin(),v.end(),boost::bind(print2,_1,11));std::cout << std::endl;return 0;}

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