Re: HoA question



John W. Krahn wrote:
M. Lewis wrote:
I'm still experimenting with the HoA from a couple of days ago. I just
realized there is the possibility for having duplicate elements of the
array. How do I prevent that?

Use a hash instead of an array.


Thank you John. I wondered about that as I was composing the question.

More to study and learn!

Thanks,
Mike


#!/usr/bin/perl

use strict;
use warnings;

use Data::Dumper::Simple;

my %HoA;

while (my $line = <DATA>){
chomp $line;
my ($prod, $flavor) = split ' ', $line, 2;
push @{ $HoA{ $prod } }, $flavor;
}

for my $i ( keys %HoA ) {
print "$i -- @{ $HoA{$i} }\n";
}


my %HoH;

while (my $line = <DATA>){
chomp $line;
my ($prod, $flavor) = split ' ', $line, 2;
$HoH{ $prod }{ $flavor } = ();
}

for my $i ( keys %HoH ) {
print "$i -- @{[ keys %{$HoH{$i}} ]}\n";
}




John

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