Skipping duplicate cities and regexp


#!/usr/bin/perl -w
use strict;
use Data::Dumper;


my $country; # Hash ref ;)
my $sep = q{,};

while (<DATA>) {
    chomp;
    next if /\A\z/;
    /\s* (.+) \s* $sep \s* (.+) \s*/msx;
    next unless defined $1 and defined $2; 
    grep { /$1/i } @{ $country->{$2} } 
      or push @{ $country->{$2} }, $1; 
}

print Dumper $country;

__DATA__

Chicago, USA
Frankfurt, Germany
Berlin, Germany
Washington, USA
Helsinki, Finland
Berlin, Germany
New York, USA
Freetown, Sierra Leone

[download]

hth,
PooLpi

'Ebry haffa hoe hab im tik a bush'. Jamaican proverb

In reply to Re: Can not print hash element by poolpi
in thread Can not print hash element by lightoverhead

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