From the OP:
I can access each element by using @Data[$_]{ID}, @Data[$_]{Score}...
I assume this was a misprint for $Data[$_]{ID}, $Data[$_], since you are accessing single elements, not array slices.
it's array of array of hashes and chorobas code works.
Here is how choroba’s code works for me:
use strict;
use warnings;
my @data =
(
{ ID => 'AA', Score => 20 },
{ ID => 'D', Score => 30 },
{ ID => 'F', Score => 7 },
{ ID => 'AA', Score => 3 },
);
## choroba's solution:
my %by_id;
push @{ $by_id{ $_->{ID} } }, $_->{Score} for @data;
# Sort the scores for each id.
$_ = [ sort { $b <=> $a } @$_ ] for values %by_id;
# Sort the ids by the highest score.
for my $id (sort { $by_id{$b}[0] <=> $by_id{$a}[0] } keys %by_id) {
print "ID: $id\tScore: $_\n" for @{ $by_id{$id} };
}
As you can see, there is only one array; i.e., @data is an array of hashes (AoH).
Hope that helps,
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