[VPM] testing two refs for same target

[Peter Scott]

At 10:20 PM 7/4/2003 -0700, Darren Duncan wrote:
> >This is the safe way to do it. You could also use grep.
> >
> >       @list = grep {$_ ne $wanted_item}, @list
> >
> >but be warned: that will remove everything that is equal to
> >$wanted_item, not just the first one as yours does.
>
>Hello Michael, thanks for your answers.  In the above example, it does 
>look like your solution is much shorter than mine, and that it would 
>work.  In some ways, your solution is better, and I will probably use it 
>for that.  This is because (although I would have to verify it), a user 
>may declare more than once that one node is the child of another, meaning 
>a reference to the child would appear in the list of the parent's children 
>more than once.

In which case the hash solution wouldn't work.  Strange sort of inheritance 
relationship you've got going there...

>If I was severing the link (which I was), then I would actually want to 
>remove all occurances.  One reason that I used the solution I did, aside 
>from not thinking of the one you provided, is that it may be faster, since 
>it doesn't go through the whole list every time.  On the other hand, maybe 
>it isn't faster.  But I think I may go with your solution anyway. -- 
>Darren Duncan

--
Peter Scott
peter at psdt.com
http://www.perldebugged.com