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Re: Where can I find more examples of use of Special Backtracking Control Verbs?

by rsFalse (Friar)
on Nov 06, 2018 at 19:33 UTC ( #1225323=note: print w/replies, xml ) Need Help??

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  1. or download this
        my $string = <>;
        my %substrings;
        $string =~ /(.+)(?{ $substrings{ $1 } = 1 })(*FAIL)/;
    
  2. or download this
        / (\b\d+\b) .*? (\b\d+\b) (?{ $count += $1 > $2 }) (*FAIL) /x;
    

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