I just stumbled across this on Stack Overflow:

   while (x --> 0)

(This is C++, in case that wasn't clear. It probably works in C too, I 
would imagine...)

The question, naturally, was asking what the hell the "-->" operator 
does. The answer is... well, it's completely logical. But this still 
leaves me wondering who THE HELL wrote this code snippet in the first 
place?? They could so trivially have made its meaning clearer...

I guess every programming language has dark corners where you can do 
really strange stuff. But the question is usually "why would you do that?"

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