On Thu, 4 Mar 2004, Dave Rolsky wrote:
> > $set2 = $set->set_map( sub {
> > $_[0]->add( hours => 1 );
> > return;
> > }
> > );
> > # same as before.
>
> Hmm, this does encourage the "map in void context" idiom, which is
> unfortunate. In this case, $set2 would be an empty set. Maybe we should
> leave iterate() in as well, since map in a void context is discouraged in
> Perl.
Actually, this doesn't encourage it and we _still_ need iterate() for
sure. We can have set_map() only be used to create a new set, and
iterate() only be used to alter the current set in place.
-dave
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