1. Yes, by several means. 
use Storable;
store (\@array, "/path/to/array.dat");
my @newarray = @{retrieve("/path/to/array.dat")};

[download]
2. and 3. 
while(<>) {
  /^(.+)\: (.+)$/;
  my $key = $1
  my @values = split(", ", $2);
  $hash{$key} = \@values;
}

foreach my $key (sort keys %hash) {
  print "$key:  ", join(", ", @{$hash{$key}}), "\n";
}

[download]


I hope that I understood what you were asking. -xtype

In reply to Re: Fun with arrays and hashes by xtype
in thread Fun with arrays and hashes by shaolin_gungfu

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