How to get the difference between two lists?

[David Vaughan]

On 04/04/2005, at 16:34, Ken Ray <kray at sonsothunder.com> wrote:
>
> I've got two lists - one with is the "comprehensive" list that is
> return-delimited, like:
> 3
> 5
> 6
<snip>
> And another list which is the list I would like to *remove* from the
> comprehensive list:
> 5
> 6
<snip>
> Which should give me:
> 3
<snip>
>
> Any ideas?

Ken (and all the other ingenious people), you have something against 
the "intersect" command?

Convert both lists to arrays and intersect them leaving only the 
non-common elements.

cheers
David
>
> Ken Ray
> Sons of Thunder Software