In all of my work with Google App Engine, I thought about complexity in loops all of the time. If the problems were way more mathematical or even more complex t

In all of my work with Google App Engine, I thought about complexity in loops all of the time. If the problems were way more mathematical or even more complex then sure I'd have to break out a textbook or something, but mostly this was the first-day algo class sort of stuff about growth over time, how deep does the tree-recursion go, etc. Mostly I just thought about this stuff in my head without even specifically conceptualizing it as a big o thing, but the principal is the same, just way simpler, more off-the-cuff, and in the middle of coding.