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Re: Identifying if a variable is the product of a qr//

by Juerd (Abbot)
on Apr 25, 2002 at 10:46 UTC ( #161914=note: print w/replies, xml ) Need Help??

in reply to Identifying if a variable is the product of a qr//

This is ugly, but it works. (For 99.9% of all cases - if you are able to predict a scalar reference's stringification, this will fail. :)

sub is_qr { my ($qr) = @_; return 0 unless ref $qr; return 0 if defined $$qr; # Update: added this line. return 1 if ref $qr eq 'Regexp'; return index(qr/$qr/, "$qr") == -1; }
This assumes that everything blessed into Regexp is a qr//, but if you don't trust that, just remove the "return 1" line.

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