David Corbin wrote:
> raptor wrote:
> >
> > $hash{/re/} i.e. this is the same like
> >
> > my @res;
> > foreach my $k (keys %hash)
> > {
> > if ($k =~ /re/) {push $hash{$k},@res}
> > };
> >
> > OR
> > keys %hash{/re/}
> > values %hash{/re/}
> > each %hash{/re/}
>
> Way cool. I'd love this.
Well, $hash{/re/} would only evaluate to a single scalar.
More likely, you'd want @hash{/re/}, which would be
equivalent to @hash{ grep { /re/ } keys %hash }.
So values %hash{/re/} is unnecessary, since it would
be the same as @hash{/re/}.
And keys %hash{/re/} would be the same as
grep {/re/} keys %hash -- a very small gain, imho.
The proposed each %hash{/re/} wouldn't work, even given
hash slices like %hash{@keys}, since each needs an actual
hash object to attach to; and slices aren't.
--
John Porter
We're building the house of the future together.
