The easiest way to see what is going on here is to use Data::Dumper; ... 

use Data::Dumper;

@a = {{1, 2, 3}, {4, 5, 6}, {2, 4, 8}};
@b = ((1, 2, 3), (4, 5, 6), (2, 4, 8));
$a = [[1, 2, 3], [4, 5, 6], [2, 4, 8]];

print Dumper(\@a);
print Dumper(\@b);
print Dumper($a);

[download]

Seeing the output, it should be more obvious that you need to do something like... 

$a = [[1, 2, 3], [4, 5, 6], [2, 4, 8]];
@$a = sort { $a->[0] <=> $b->[0] } @$a;

[download]
--
James Antill

In reply to Re: list of lists (LOL) by nevyn
in thread list of lists (LOL) by Anonymous Monk

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