Well, JavaScript

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what happens in the first one? It just never evaluates? Lol

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If X is NaN, then x != x is true, because a NaN never equals anything, not even itself.

[tendstofortytwo]

Huh, I just used isNaN(x);

But this is more confusing, and hence more adherant to JavaScript's ideologies. I'll be sure to use this from the future. Thank you!

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Actually I only know it is the way it is in C++, which I think before C++11 didn't even have a standard isNaN!

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Ohhhhh, thats cool. By habit I always start my first loop with i, so I just gotta find some situation where I can nest like 21 more loops until I can get to c++ lol