Andrew Rosolino wrote:
> Say I have an array that contains!
>
> @array = qw( cool cool dog dog dog );
>
> Now I want to sum that up, so that the array only has
> 1 COOL and 1 DOG, so it would contain!
>
> @array = qw( cool dog );
my %array;
map { $array{$_}++ } @array;
my @unique = keys %array;
there are several examples in the perl cookbook that demonstrate other
methods for finding unions, intersections, etc.
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