Useful helper functions and utilities

#include <format>
#include <iostream>
#include <sstream>
#include <string>

// Write elements of a container to std::out
void PrintContainer(const auto& container, const std::string_view info = "")
{
    if (info.size()) std::cout << std::format("{}: ", info);
    for (auto e : container)
        std::cout << std::format("{} ", e);
    std::cout << '\n';
}

// Writing elements of a range or container with configurable separators to a stream or string. 
namespace MyUtils
{
    // Provide separator between string elements, write result to stream
    template<typename I>
    std::ostream& join(I it, I end_it, std::ostream& o, std::string_view sep = "")
    {
        if (it != end_it) o << *it++;
        while (it != end_it) o << sep << *it++;
        return o;
    }

    // Provide separator between string elements, write result to string
    template<typename I>
    std::string join(I it, I end_it, std::string_view sep = "")
    {
        std::ostringstream o;
        join(it, end_it, o, sep);
        return o.str();
    }

    // Overload for container, stream version
    template<typename Container>
    std::ostream& join(Container& c, std::ostream& o, std::string_view sep = "")
    {
        return join(std::begin(c), std::end(c), o, sep);
    }

    // Overload for container, string version
    template<typename Container>
    std::string join(Container& c, std::string_view sep = "")
    {
        return join(std::begin(c), std::end(c), sep);
    }
}