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$1 not "freezing" in an addition

by grondilu (Pilgrim)
on Dec 14, 2012 at 12:17 UTC ( #1008823=perlquestion: print w/ replies, xml ) Need Help??

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  1. or download this
    sub distance {
        ...
    ...
        until ...
        ...
    }
    
  2. or download this
    sub butter {
        my $_ = shift;
        return $1 + butter($_) if s/(\d+)//;
    ...
    }
    
    print butter 'effect / 7ACV06';
    

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