Only keeping the unique changes

If this means ignoring duplicates use a HashOfHashes (HOH)

#!perl
use strict;
use Data::Dumper;

my %hash=();
while (<DATA>){
  chomp;
  my ($name,$ip) = (split)[0,1];
  if ( $name ne "" && $ip ne "" ) {
    ++$hash{$name}{$ip};
  }
}

my %application=();
for my $name (keys %hash){
  $application{$name} = [sort keys %{$hash{$name}}];
}

print Dumper( \%application ) ;

__DATA__
application1 10.10.1
application1 10.10.2
application3 10.10.1
application3 10.10.3
application2 10.10.3
application2 10.10.4
application2 10.10.5
application3 10.10.6
application1 10.10.1
application1 10.10.1

[download]
poj

In reply to Re^3: Array of Arrays on Monday. by poj
in thread Array of Arrays on Monday. by vlturner

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