prvalue sucks

prvalue.cpp

/*
 * =====================================================================================
 *
 *       Filename:  prvalue.cpp
 *
 *    Description:  test prvalue
 *
 *        Version:  1.0
 *        Created:  2018/06/26 (yyyy/mm/dd)
 *       Revision:  none
 *       Compiler:  g++ (C++17)
 *
 *         Author:  lionking
 *   Organization:  None
 *         Source:  https://www.youtube.com/watch?v=uYDt1gCDxhM&list=PLHTh1InhhwT6bwIpRk0ZbCA0N2p1taxd6&t=0s&index=117
 *
 * =====================================================================================
 */

#include <iostream>


void bloop(int&&)       { std::cout << "int move!\n"; }
void bloop(int const&)  { std::cout << "int copy!\n"; }
int const intbar()      { return {}; }


struct foo {};
void bloop(foo&&)       { std::cout << "foo move!\n"; }
void bloop(foo const&)  { std::cout << "foo copy!\n"; }
foo const foobar()      { return {}; }


int main()
{
    bloop(intbar());  // print "int move!"
    bloop(foobar());  // print "foo copy!"
    return 0;
}