#ifndef NET_TOOLS_FLIP_SERVER_OTHER_DEFINES #define NET_TOOLS_FLIP_SERVER_OTHER_DEFINES class NullStream { public: NullStream() {} template NullStream operator<<(T t) { return *this;} }; #define VLOG(X) NullStream() #define DVLOG(X) NullStream() #endif // NET_TOOLS_FLIP_SERVER_OTHER_DEFINES