ASCII strings to Unicode in C++

inline std::wstring AsciiToUnicode(std::string text)
{
    // Could do some DEBUG check here to ensure it is really ASCII.
    // Also, if in the future, it is found, it is not the case, 
    // it would much easier to update code.

    // Same as jean Davy here...
    return std::wstring(text.begin(), text.end());
}