I've linked [1] to another example of exploiting an invariant that you might find more compelling. The presenter takes a multi-page mess of UI code from Chrome

I've linked [1] to another example of exploiting an invariant that you might find more compelling. The presenter takes a multi-page mess of UI code from Chrome containing something like 8 loops, then solves an even harder version of that problem in ... 2 lines of code, by exploiting an invariant associated with the problem (and a well placed library call!). [1] https://news.ycombinator.com/item?id=19567671 https://news.ycombinator.com/item?id=19567671