my %seen;
while (<DATA>) {
  print "$1\n" if /(\d+)$/ and not $seen{$1}++;
}
__DATA__
foo 1
foo 2
bar 1
bar 3
bar 4
bar 2
bar 2
bar 1
baz 1
ex 5

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In reply to Re: print a hash by Roy Johnson
in thread print a hash by Anonymous Monk

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