3 ms·
In JS: -0 + 0; // 0 -0 + (-0); // -0 -0 - 0; // -0 I claim that the `-0 + 0` case is the strange inconsistent one, so that's the reason for my WTF l
by _getify 8y ago
In JS:
-0 + 0; // 0
-0 + (-0); // -0
-0 - 0; // -0
I claim that the `-0 + 0` case is the strange inconsistent one, so that's the reason for my WTF label.
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Consider the counter-argument, that it's intuitive/correct because in math `X + (-X) = 0`:
3 + (-3); // 0
-3 + (3); // 0
-0 + (0); // 0
0 + (-0); // 0
It's true that this characteristic by itself is preserved, but where it falls apart:
X + (-X) = 0 // -->
X = 0 - (-X) // -->
X = 0 + X
That final statement should be true for all X, but as demonstrated above, it's not true for -0.