Steve Grazzini wrote:
> On Mon, Jul 07, 2003 at 01:00:22PM +0100, Rob Dixon wrote:
> > Steve Grazzini wrote:
> > > On Sun, Jul 06, 2003 at 11:20:03AM -0000, mark sony wrote:
> > > > $_ = "The brown fox jumps over the lazy dog";
> > > > /the (\S+)(?{ $color = $^N }) (\S+)(?{ $animal = $^N })/i;
> > >
> > > $^N is new in 5.8.0.
> > > In this case you can probably use $+ instead.
> >
> > $+ will return only the last captured string so you would
> > need to process your text in two passes to get this result.
>
> $+ and $^N are updated every time a set of parens matches, so
> code blocks inside the regex will see whatever the "last match"
> was at that moment.
>
> $_ = "abcde";
>
> m{ ((.) (?{ print $+ }))* }x; # prints "a","b","c"...
> m{ ((.*) (?{ print $+ }))* a }x; # prints lots of stuff
Sure, but for Perl 5.6 the documentation says:
WARNING: This extended regular expression feature is
considered highly experimental, and may be changed or deleted
without notice.
Because of this I've always steered clear of it. I assume it's been
validated in Perl 5.8?
Rob
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