value = (comparator || value !== 0) ? value : 0; does it work?

[fi3ework]

value = (comparator || value !== 0) ? value : 0;

in https://github.com/lodash/lodash/blob/master/.internal/baseDifference.js#L46
what does this sentence mean? Is it useless? :-)

[jdalton]

Hi @fi3ework!

That bit ensures that a positive 0 is used because -0 is a thing in JS.

[fi3ework]

@jdalton
yeah, I know the exist of -0, but why change -0 to +0 ? Why not just use -0 directly? :-)

[jdalton]

Because internally we use Set for deduping and Set doesn't distinguish between the two.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.