Posted by R. van Twisk on Jan 23, 2015; 10:03pm
URL: https://forum.librecad.org/Const-reference-with-primitive-types-tp5711010p5711013.html

any time!

I think most important here is that const simply means to other developer 'do not change this var'.
I personally believe that it's up to the compiler to generate optimised code.

ps: we hang out out #LibreCAD@freenode.org