Function format

ext/include/cppformat/format.h:2051–2060

// Formats a value.
template <typename Char, typename T>
void format(BasicFormatter<Char> &f, const Char *&format_str, const T &value) {
  std::basic_ostringstream<Char> os;
  os << value;
  internal::Arg arg;
  internal::Value &arg_value = arg;
  std::basic_string<Char> str = os.str();
  arg_value = internal::MakeValue<Char>(str);
  arg.type = internal::Arg::STRING;
  format_str = f.format(format_str, arg);
}

// Reports a system error without throwing an exception.
// Can be used to report errors from destructors.