Symmetric difference for Set and IntSet

[Andrew Lelechenko]

On 18 Jun 2020, at 23:42, Bardur Arantsson <spam at scientician.net> wrote:
> I think it's probably going to be useful, but I would suggest an
> algorithm which actually returns each of the terms here (as a tuple), i.e.
> 
>   The "added" bits
>   The "removed" bits
>   The "common" bits
> 
> This may not be *that* useful for sets per se, but I've lost count of
> how often I've had to implement a similar thing for maps.


This is probably orthogonal to my proposal here, because it does not improve the performance of symmetricDifference. Maps are more flexible in this aspect, because there are merge tactics, which allow to encode any set operation.

Best regards,
Andrew