text: #ifndef _H_TIRAMISU_UTIL_
  #define _H_TIRAMISU_UTIL_
  
  // Think snprintf but easier to use, copied for Stackoverflow
  template<typename ... Args>
  std::string str_fmt( const std::string& format, Args ... args )
  {
    size_t size = snprintf(nullptr, 0, format.c_str(), args ...) + 1; // Extra space for '\0'
    std::unique_ptr<char[]> buf(new char[size]); 
    snprintf(buf.get(), size, format.c_str(), args ...);
    return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
  }
  
  #endif
  