map { /(\d+)/; $1 }

[download]

No, that is wrong.    If /(\d+)/ doesn't match then $1 will not contain valid data: 

$ perl -le'
use Data::Dumper;
my @y = map { /(\d+)/; $1 } qw/ ab123cd ab456cd abcdefg ab789cd /;
print Dumper \@y;
'
$VAR1 = [
          '123',
          '456',
          undef,
          '789'
        ];

[download]

Just use: 

$ perl -le'
use Data::Dumper;
my @y = map /(\d+)/, qw/ ab123cd ab456cd abcdefg ab789cd /;
print Dumper \@y;
'
$VAR1 = [
          '123',
          '456',
          '789'
        ];

[download]

The regular expression by itself will just do the right thing.

In reply to Re^2: Schwartzian transform deformed with impunity by jwkrahn
in thread Schwartzian transform deformed with impunity by biohisham

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