C++ variadic formatter using boost::format

cpp_format_str.cpp

#include <iostream>
#include <boost/format.hpp>

inline std::string format_str_recursive(boost::format& message) {
  return message.str();
}

template<typename TValue, typename... TArgs>
std::string format_str_recursive(boost::format& message, TValue&& arg, TArgs&&... args) {
  message % std::forward<TValue>(arg);
  return format_str_recursive(message, std::forward<TArgs>(args)...);
}

template<typename... TArgs>
std::string format_str(const char* fmt, TArgs&&... args) {
  boost::format message(fmt);
  return format_str_recursive(message, std::forward<TArgs>(args)...);
}

int main() {

  std::cout << format_str("Boost %s %d.%d.%d", "version", 1, 57, 0) << std::endl;

  return 0;
}