Browse - Programming Tips - How can I remove/delete duplicate elements from an array?

Date: 2011may3
Language: perl

Q.  How can I remove/delete duplicate elements from an array?

A.  Use grep and a hash like this:

sub removeDuplicates(@) { my(@in) = @_; my(%seen); return grep { ! $seen{$_}++ } @in; } sub exampleUse() { @nodups = removeDuplicates(@a); }