I have taken to thoroughly explaining what a regex does in the code comments. Not just "match that and not that" but going through every character in the expre

I have taken to thoroughly explaining what a regex does in the code comments. Not just "match that and not that" but going through every character in the expression. It is a practice i took up when playing around with brainfuck. My magnum opus was a program that factored numbers in an arbitrary amount of time. That is _NOT_ something you hammer out in an afternoon, and without commenting everything thoroughly (like what I was doing, where I was in code execution, what state the whole program was in) I would never have made it. Non-related story time: At first when playing with brainfuck, I wrote my own BF-interpreter that compiled to an IL which was easier to debug (with my own interpreter that could give me stack traces with comments about where I was in memory and what the hell was going on). After a month, I really didn't need to. My brain had gotten used to reasoning about BF-code and I could actually understand what code was doing as long as I knew which kind of compiler/interpreter it was written for.