This post explains when you should and shouldn't use it: https://juanchopanzacpp.wordpress.com/2014/05/11/want-speed-dont-always-pass-by-value/ https://juanchop

This post explains when you should and shouldn't use it: https://juanchopanzacpp.wordpress.com/2014/05/11/want-speed-dont-always-pass-by-value/ https://juanchopanzacpp.wordpress.com/2014/05/11/want-speed-...