I used to strive for "const correctness" in my game engine code, and wasted a fair amount of time fighting the compiler and editing function signatures as requi

I used to strive for "const correctness" in my game engine code, and wasted a fair amount of time fighting the compiler and editing function signatures as requirements changed. Mostly eliminating const from the codebase simplified things a lot. Didn't do any comparison studies of performance, but the productivity boost from not having to think about it was nice, and I suspect any performance difference is margin-of-error stuff like the sqlite results in this article.