Heres an example -> auto now = boost::chrono::steady_clock::now().time_since_epoch(); auto timeSinceEpoch = boost::chrono::duration_cast<boost::chrono::millis

Heres an example -> auto now = boost::chrono::steady_clock::now().time_since_epoch(); auto timeSinceEpoch = boost::chrono::duration_cast<boost::chrono::milliseconds>(now).count(); (This is from http://stackoverflow.com/questions/16700277/get-a-double-from-boostchronosteady-clocknow http://stackoverflow.com/questions/16700277/get-a-double-fro...). The person writing the answer is dilligent and hence has supplied the types as a preamble. Most articles / answers / api docs dont take the effort to elaborate on return value types.