I can't print keys and values in Perl - perl

Question

I have a data structure that I got from this code.
my $name = $data->{Instances}->[0]->{Tags};
That data structure looks like this
$VAR1 = [
{
'Key' => 'Name',
'Value' => 'fl-demo'
},
{
'Value' => 'FL',
'Key' => 'state'
}
];
I'm trying to print the keys and values with this
foreach my $key (sort keys %$name) {
my $value = $name->{$key};
print "$key => $value\n";
}
I'm getting
Not a HASH reference at ./x.pl line 19.

Answer 1

The tags are returned as an array, not a hash. So you're looking at doing something like this, instead, to iterate over them:
foreach my $tag (#$name) {
my $key = $tag->{Key};
my $val = $tag->{Value};
print "$key => $val\n";
}

Answer 2

The data structure dump of variable $name indicates that you have array reference.
You can use loop to output the data of interest, do not forget to dereference $name variable.
use strict;
use warnings;
use feature 'say';
my $name = [
{
'Key' => 'Name',
'Value' => 'fl-demo'
},
{
'Value' => 'FL',
'Key' => 'state'
}
];
say "$_->{Key} = $_->{Value}" for #$name;
Output
Name = fl-demo
state = FL

Answer 3

Elaborating on a previous answer:
$name is a reference to an array containing references to hashes.
#$name and #{$name} (equivalent representations) refer to the array that $name references.
${$name}[0] and $name->[0] (equivalent representations) refer to the first hash in the array referenced by $name.
${$name}[0]{'Key'}, $name->[0]->{'Key'}, etc. (equivalent representations) refer to 'Key''s hash value in the first hash in the array referenced by $name.
As such, the following would iterate over all array and hash elements:
foreach my $hashref ( #{$name} )
{
foreach my $key ( sort(keys(%{$hashref})) )
{
printf("%s => %s\n",$key,$hashref->{$key});
}
print "\n";
}
Or, more compactly (and arguably unreadably):
printf("%s\n",join("\n", map {
my $h = $_;
join(', ', map { sprintf('%s=%s',$_,$h->{$_}) } sort(keys(%{$h})) );
} #{$name} ));