How to easily convert an unsigned string to a string?

I define an unsigned string as a string containing unsigned chars:

namespace std
   typedef basic_string<unsigned char> ustring;

Thus, given a basic std::string whose chars range from -128 to 127, how can I easily convert it to a std::ustring whose chars range from 0 to 255?


ustring to_ustring(const std::string& s)
    return {s.begin(), s.end()};

You do:

using ustring = std::vector<unsigned char>;
std::string a("abc");
ustring b(a.begin(), a.end()); 

Note that the zero-terminator is not copied.

basic_string<unsigned char> would require specializing char_traits . And no new names can be added to namespace std .


上一篇: 在c中的signed和unsigned char之间的区别

下一篇: 如何轻松将无符号字符串转换为字符串?