I very much appreciate the thorough answers I receive here: they have helped me get reacquainted with Perl. The hardest part I still encounter is to understand what the symbols mean, not so much the concepts.

I'm simply asking for a "better" way to accomplish a task I already can do.

An example: I want to know if there's a way to send just one key & value per array/hash - preferably by reference - to a subroutine. In the example code below, I want to send all and only the {Sub_Name}s and their respective values. The code below works and I've come up with two ways to list the Sub_Name. I'm simply wanting to know if there's a better way to do it, so I don't have to make an array or send the entire array of hashes to the subroutine.

#!/usr/bin/env perl

#use 5.36.1;
use strict;
use warnings;

use Data::Dumper;
use autodie;
use File::Find;
use File::Copy;
use File::Rename;
use feature 'fc';
use File::Path qw( make_path );

my $Wait_Time = 10;    # Implement Time Delay

# Subscription DATA sets
my @Subscription = ( 
     {
     Sub_Name               => "Morph",
     Archive_File           => "Morph Archive.txt",
     },
     {
     Sub_Name               => "Analogue",
     Archive_File           => "Analogue Archive.txt",
     },
     {
     Sub_Name               => "Cat",
     Archive_File           => "Cat Archive.txt",
     },
     {
     Sub_Name               => "Zoonotic",
     Archive_File           => "Zoonotic Archive.txt",
     },
     {
     Sub_Name               => "Hydro",
     Archive_File           => "Hydro Archive.txt",
     },
);

#Subscription of Names
my @Subscription_Names_List;
for (@Subscription) {push @Subscription_Names_List, $_->{Sub_Name};}
List_Subscriptions(\@Subscription_Names_List);


for (@Subscription) {
    Display_Subs(\%$_);
}

sub Display_Subs { 
    my ($my_Sub) = @_;
    print "Testing Subscription to: $my_Sub->{Sub_Name}\n";
    return $my_Sub;
}

sub List_Subscriptions {
    my (@Sub_ARRAY) = @{$_[0]};
#    my (@Sub_ARRAY) = @_;

    print "The Current Subscription List:\n\n";
    for (@Sub_ARRAY) { print " \t$_ \n"; }
    print "\n\n";
}

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In reply to How can I send a "transposed slice" of an array of hashes and by extension an array of arrays, or hash of hashes to a subroutine by ObiPanda

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