You skipped perlintro :) you've not identified %unique as a hash

Also, this is interesting :)  [perldoc://unique] unique -> perlfaq4#How can I remove duplicate elements from a list or array?

Use a hash. When you think the words "unique" or "duplicated", think "hash keys".

In reply to Re: What does undef do when I say @hashslice{@array} = undef by Anonymous Monk
in thread What does undef do when I say @hashslice{@array} = undef by pritesh

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