The only use case I ever will use that is when I am looping over multiple values at once. For me, it's I have such a weird aversion to having a variable to find outside of a loop and then updating that variable inside of the loop. So I'm going to do a second map filter reduce down to 100 milliseconds by moving it to MongoDB aggregations. It's unreal. Yeah. Next one is using a four in four of loop. No, we're not talking about the four I plus plus. Everybody hates that one. That four I equals zero I plusplus.

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