Just out of curiosity, how does intp() and such work. Say you have int|float x, then x=5.0. Does intp test the type of the variable, or the type of the contents. Does intp(x) return true because x is of type int (also of type float), or false because the contents of x (currently 5.0) is float, so not an int at that point. I'm thinking contents, not variable itself, so you can do checks against it.
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