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Re^2: What is wrong here (Replacing Strin pieces)

by AnomalousMonk (Canon)
on Jul 16, 2013 at 16:23 UTC ( #1044631=note: print w/replies, xml ) Need Help??

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  1. or download this
    $string =~ s/\A(-+)|(-+)$/("?" x length $1).("?" x length $2)/eg;
    
  2. or download this
    >perl -wMstrict -le
    "my $s = '---------xxxxxxxxxxxxxxx------yyyyyyyyyyyyyy--------';
    ...
    Use of uninitialized value $2 in repeat (x) at -e line 1.
    Use of uninitialized value $1 in repeat (x) at -e line 1.
    '?????????xxxxxxxxxxxxxxx------yyyyyyyyyyyyyy????????'
    

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