cpp_identifier_gen.cpp

inline auto cpp_identifier_gen(int max_size)
{
   using namespace tiny_rand;
   static const std::string HEAD_CHARS = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
   static const auto head_char_gen = choice_gen(HEAD_CHARS);
   static const auto rest_gen = string_gen(max_size - 1, choice_gen(HEAD_CHARS + "1234567890"));

   return [=](std::mt19937& bit_gen) -> std::string
   {
      return std::string {1, head_char_gen(bit_gen)} + rest_gen(bit_gen);
   };
}