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  1. or download this
    use Data::Dumper;
    my @pal_files = glob '*palindromes.csv';
    print Dumper(\@pal_files);
    
  2. or download this
    for my $file (@pal_files) {
        open my $IN, '<', $file or die "$file: $!\n";
    ...
            # Process the line...
        }
    }
    
  3. or download this
    @ARGV = glob '*palindromes.csv';
    while (my $line = <>) {
        # Process the line...
    }
    
  4. or download this
    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
    }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,