There is no need to save the index as part of this, as that information is retained by the AoA itself. You have to make the best design decision "one truth is only stored once"

use Data::Dumper;
use strict;
use warnings;

my $arr = ['A -4 C','C -4 B','B -4 A','A -2 C','C -3 B'];
my @a = map {[split " ",$_]} @$arr;
print Dumper(\@a);

[download]

This prints:

$VAR1 = [
          [
            'A',
            '-4',
            'C'
          ],
          [
            'C',
            '-4',
            'B'
          ],
          [
            'B',
            '-4',
            'A'
          ],
          [
            'A',
            '-2',
            'C'
          ],
          [
            'C',
            '-3',
            'B'
          ]
        ];

[download]

In reply to Re: Using Map to Create AoA by pg
in thread Using Map to Create AoA by neversaint

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