(non?)-template template parameters for container stream insertion, C++ (clang)

(non?)-template template parameters for container stream insertion

// Can https://stackoverflow.com/a/14311714 be reasonably rewritten with only
// non-template template parameters? (Try 1: overload resolution is a problem.)

#include <iostream>
#include <vector>
#include <deque>
#include <list>

#define USE_TEMPLATE_TEMPLATE_PARAMETER_VERSION false

#if USE_TEMPLATE_TEMPLATE_PARAMETER_VERSION
template<typename T, template<class,class...> class C, class... Args>
std::ostream& operator <<(std::ostream& os, const C<T,Args...>& objs)
{
    os << __PRETTY_FUNCTION__ << '\n';
    for (auto const& obj : objs)
        os << obj << ' ';
    return os;
}
#else
template<typename Container>
std::ostream& operator <<(std::ostream& os, const Container& objs)
{
    os << __PRETTY_FUNCTION__ << '\n';
    for (auto const& obj : objs)
        os << obj << ' ';
    return os;
}
#endif

int main()
{
    std::vector<float> vf { 1.1, 2.2, 3.3, 4.4 };
    std::cout << vf << '\n';

std::list<char> lc { 'a', 'b', 'c', 'd' };
    std::cout << lc << '\n';

std::deque<int> di { 1, 2, 3, 4 };
    std::cout << di << '\n';

return 0;
}


run \| edit \| history \| help	0