Quote Originally Posted by phuong_bk View Post
oh no,
it' mean is add together vector x and ob

In addition, my opinion Operator == narmally reuturns bool (true, false), thas is true == 1, false == 0
But the TYPE returned should be bool, not int, and the values should be true and false, not 0 and 1. Yes, they are equivalent, and bool can be converted to&from int. But it's CORRECT to use bool, incorrect to use int.

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Mats