How To Access Values in Perl Hash as an Array, Given a List of Keys

Posted on April 9, 2010 by Masao  
  my @fields = (
    "country_name",
    "region_name",
    "city_name",
  );
  while (my $row = $sth->fetchrow_hashref) {
    my %row = %$row;
    printf $format, @row{ @fields };
  }

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