Greetings,

Seems to me regex over istreams would be quite useful. Here's an
inefficient implementation:


     inline std::istream& operator >> (std::istream& in, std::string & v)
     {
         static const std::regex string_regex(R"(^\"(.*?)\"$)");

         std::smatch match;

         std::string x;

         for (x += in.get(); in; x += in.get())
             if (std::regex_match(x, match, string_regex))
             {
                 v = match[1].str();

                 return in;
             }

         throw std::invalid_argument("Parse error.");
     }

Is there any interests in such implementation?


Regards,

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