it's the pairwise inverse of `intersect`. i think ...

# stdlib

[jw]

it's the pairwise inverse of intersect. i think it might be too specialized to warrant stdlib inclusion though.

[elizarov]

When you cannot even name it, it does indeed looks too specialized.

[jw]

I found that it's called a disjunctive. My arguments for this stuff usually come down to symmetry since I have no idea how common this need is.

[karelpeeters]

Out of curiosity, why do you need this?

[jw]

I'm computing the difference of two collections