Re:Return True to Win
by lake99 on Friday August 12, 2016 @03:25PM
(#12278126)
> Classically, id(x) != id(x) is logically inconsistent.
Equality is domain dependent. For example ∞!=∞ could be justified, as can (0/0)!=(0/0). In the domain of real numbers, equality can be an undecideable problem[1]. I guess the designers of these languages had to choose between tolerable defaults or throwing exceptions. I'm happy with JS doing this:
% node
> 1.0/-0
-Infinity
> 1.0/0
Infinity
> 0/0
NaN
> 0/NaN
NaN
> 1+NaN
NaN
Equality is domain dependent. For example ∞!=∞ could be justified, as can (0/0)!=(0/0). In the domain of real numbers, equality can be an undecideable problem[1]. I guess the designers of these languages had to choose between tolerable defaults or throwing exceptions. I'm happy with JS doing this:
[1] https://math.stackexchange.com/questions/143727/determining-...