If you want to perform a merge which removes the duplicates then you might want some thing like: 

   my %seen;
   my @out = grep( !$seen{$_}++, @A, @B)

[download]
There are other examples in the perlfaq4

/J\

In reply to Re: Merging Arrays without duplicates by gellyfish
in thread Merging Arrays without duplicates by perl_krish

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