仿函数和函数配接器

//
//  main.cpp
//  function_adaptor
//
//  Created by IDM-PKU on 14-9-3.
//  Copyright (c) 2014年 PKU. All rights reserved.
//

#include <iostream>
#include <set>
#include <deque>
#include <algorithm>
#include "print.hpp"

using namespace std;

int main(int argc, const char * argv[])
{

    set<int,greater<int> > coll1;
    deque<int> coll2;
    for (int i=1; i<=9; ++i) {
        coll1.insert(i);
    }
    PRINT_ELEMENTS(coll1,"initialized: ");
    transform(coll1.begin(), coll1.end(),back_inserter(coll2),bind2nd(multiplies<int>(), 10));
    PRINT_ELEMENTS(coll2);
    replace_if(coll2.begin(), coll2.end(), bind2nd(equal_to<int>(), 70), 42);
    PRINT_ELEMENTS(coll2,"replace: ");
    coll2.erase(remove_if(coll2.begin(), coll2.end(), bind2nd(less<int>(), 50)), coll2.end());
    PRINT_ELEMENTS(coll2,"removed: ");
    return 0;
}

//
//  print.hpp
//  function_adaptor
//
//  Created by IDM-PKUSZ on 14-9-3.
//  Copyright (c) 2014年 PKU. All rights reserved.
//

#ifndef function_adaptor_print_hpp
#define function_adaptor_print_hpp

#include <iostream>

template <class T>
inline void PRINT_ELEMENTS(const T & coll, const char * optcstr="")
{
    typename T::const_iterator pos;
    std::cout << optcstr;
    for(pos=coll.begin();pos!=coll.end();++pos)
        std::cout << *pos << ‘ ‘;
    std::cout << std::endl;
}


#endif