You'd be deleting every element of @TERMS if that code worked. You can delete array elements with splice, but it would be easier to use a hash to keep track of duplicates:
my %seen;
@TERMS = grep { ! $seen{$_}++ } @TERMS;

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Updated...fixed due to catch from johngg.

In reply to Re: delete an element from an array by runrig
in thread delete an element from an array by alkis

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