my $parts = [ 'Part1', 'Part2','Part3' ];
my $newLoop;

for (@$parts) {
  my $hash = { PARTNAME => $_ };

  $hash->{SELECTED}++
      if $_ eq $row->{title};

  push @$newLoop, $hash;
}

# ----

my $parts = [ 'Part1', 'Part2','Part3' ];
my $newLoop = [ map {{ PARTNAME => $_,
                        $_ eq $row->{title}
                           ? (SELECTED => 1)
                           : ()
                    }} @$parts ];