Use ||= to conditionally initialize, otherwise just returns the regex.

sub match_re {
    my $self = shift;

    return $self->{match_re} ||= do {
        my $match_string = $self->match_string;
        qr/\Q$match_string\E/;
    };
}

[download]

In reply to Re: How to cache a regular expression in a DBIx::Class object by wind
in thread How to cache a regular expression in a DBIx::Class object by chrestomanci

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