Function AppendF

tensorflow/lite/toco/format_port.h:55–57

// One departure is that %s can be driven by a std::string or string.
template <typename... Args>
inline void AppendF(string* destination, const char* fmt, Args&&... args) {
  AppendFHelper(destination, fmt, IdentityOrConvertStringToRaw(args)...);
}

// Return formatted string (with format fmt and args args). fmt follows C printf
// semantics. One departure is that %s can be driven by a std::string or string.