Your desired output looks more like an AoH. It doesn't have any keys in the top level.
Yet another combinatorial problem. Let's try glob again,
sub hoa2aoh {
my $hoa = shift;
my @keys = keys %$hoa;
my @patterns = map {
local $" = ',';
"{@$_}";
} values %$hoa;
[
map {
my %hash;
@hash{@keys} = split ','; # char changed from "\0"
\%hash;
} glob join ',', @patterns
];
}
As I say, that returns a reference to an array of hashes.
Update: glob wasn't liking the "\0" seperator I used at first. It didn't like whitespace, either. Changed to comma, it works now. Also removed superfluous variable.
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