text: #pragma once
  #include "utility.h"
  
  #include <string>
  #include <string_view>
  
  namespace sw
  {
      using char_t = TCHAR;
      using string_t = std::basic_string<char_t>;
      using stringbuf_t = std::basic_stringbuf<char_t>;
      using stringstream_t = std::basic_stringstream<char_t>;
      using istringstream_t = std::basic_istringstream<char_t>;
      using ostringstream_t = std::basic_ostringstream<char_t>;
      using string_view_t = std::basic_string_view<char_t>;
  } // namespace sw
  