Lady, EVOLVED 
javascript quiz
is `-(a + b)` always the same value as `-a + -b`?
javascript quiz qualification
assume `a` and `b` are integers, numbers, and that `a + b` is less than `Number.MAX_SAFE_INTEGER`; this isn’t a gotcha where `a` and `b` are strings and i’m not talking about rounding errors here
re: javascript quiz answer
@Lady is this because of floating point arithmetic
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@aescling technically
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@aescling (by which i mean BigInt does not have this quality)
counterexample re: javascript quiz
@Lady a = -b
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@Lady would not have known this before hehe
counterexample re: javascript quiz
@alyssa yeah i was trying to figure out if `$ + 0` was the fastest and easiest way to coerce `$` to never have negative zero (it is) and then i thought about it some more
javascript quiz answer
(no)