Re: What's missing in ELisp that makes people want to use cl-lib?

[João Távora]

On Sat, Nov 11, 2023 at 1:23 AM Po Lu <luangruo@yahoo.com> wrote:
>
> Dmitry Gutov <dmitry@gutov.dev> writes:
>
> > Just to take this example, there are about 2 major bugs: 1) the list
> > will come out reversed, 2) the code does XOR rather than subtraction.
>
> Hmm, reading its doc string, I think a more illustrative name for
> cl-set-difference would be cl-set-complement.

No, it's called "set difference" in CL and in other languages for a reason:

   https://proofwiki.org/wiki/Definition:Set_Difference

> If the order is significant (it seldom is),

You don't know that, of course.

> Or alternatively a local variable can be maintained holding
> the last cdr of the list, and insertion performed on that instead.

choo-choo!

João