fork download

copy

// g++ -std=c++14 -pedantic -pthread main.cpp
// output: 1 2 3 4 5 1 1 1 
#include <algorithm>
#include <vector>
#include <functional>
#include <iterator>
#include <iostream>
 
int main()
{
  std::vector<int> a = { 1, 2, 3, 2, 4, 5, 1, 1, 3, 5, 1, 5 }, b = { 2, 5, 5, 3 }, c;
 
  std::copy_if(a.begin(), a.end(), std::back_inserter(c), 
    std::bind(std::less<>(),   // this won't work in pre-C++14
      std::bind(
        std::count<std::vector<int>::iterator, int>, 
          std::bind(static_cast<std::vector<int>::iterator (std::vector<int>::*)()>(&std::vector<int>::begin), &c), 
          std::bind(static_cast<std::vector<int>::iterator (std::vector<int>::*)()>(&std::vector<int>::end), &c), 
          std::placeholders::_1
      ),
      std::bind(
        std::minus<>(), // this won't work in pre-C++14
          std::bind(
            std::count<std::vector<int>::iterator, int>, 
              a.begin(), 
              a.end(), 
              std::placeholders::_1
          ),
          std::bind(
            std::count<std::vector<int>::iterator, int>, 
              b.begin(), 
              b.end(), 
              std::placeholders::_1
          )
      )
    )
  );
 
  std::copy(c.begin(), c.end(), std::ostream_iterator<int>(std::cout, " "));
  std::cout << std::endl;
}

prog.cpp: In function 'int main()':
prog.cpp:11: error: braces around initializer for non-aggregate type 'std::vector<int, std::allocator<int> >'
prog.cpp:11: error: braces around initializer for non-aggregate type 'std::vector<int, std::allocator<int> >'
prog.cpp:13: error: 'copy_if' is not a member of 'std'
prog.cpp:14: error: 'bind' is not a member of 'std'
prog.cpp:14: error: wrong number of template arguments (0, should be 1)
/usr/include/c++/4.3/bits/stl_function.h:226: error: provided for 'template<class _Tp> struct std::less'
prog.cpp:15: error: 'bind' is not a member of 'std'
prog.cpp:17: error: 'bind' is not a member of 'std'
prog.cpp:18: error: 'bind' is not a member of 'std'
prog.cpp:19: error: 'std::placeholders' has not been declared
prog.cpp:21: error: 'bind' is not a member of 'std'
prog.cpp:22: error: wrong number of template arguments (0, should be 1)
/usr/include/c++/4.3/bits/stl_function.h:146: error: provided for 'template<class _Tp> struct std::minus'
prog.cpp:23: error: 'bind' is not a member of 'std'
prog.cpp:27: error: 'std::placeholders' has not been declared
prog.cpp:29: error: 'bind' is not a member of 'std'
prog.cpp:33: error: 'std::placeholders' has not been declared

Standard output is empty