Converting between wstring and string in C++

narrowWiden.cpp

/* Retrieved from http://stackoverflow.com/a/18374698/ on April 13, 2017
 * Posted by user [dk123](https://stackoverflow.com/users/1709725/dk123) on Aug 22 '13 at 7:57
 * Credit given in post to user ArmanSchwarz who posted a comment with this information
 */

#include <codecvt>

// string to wstring
wstring s2ws(const std::string& str)
{
    using convert_typeX = std::codecvt_utf8<wchar_t>;
    std::wstring_convert<convert_typeX, wchar_t> converterX;

    return converterX.from_bytes(str);
}

// wstring to string
string ws2s(const std::wstring& wstr)
{
    using convert_typeX = std::codecvt_utf8<wchar_t>;
    std::wstring_convert<convert_typeX, wchar_t> converterX;

    return converterX.to_bytes(wstr);
}

Wow, thank you! This is very helpful.