How can I represent sets in Perl?

Question

I would like to represent a set in Perl. What I usually do is using a hash with some dummy value, e.g.:

my %hash=();
$hash{\"element1\"}=1;
$hash{\"element5\         


        

Answer 1

That's how I've always done it. I would tend to use exists rather than defined but they should both work in this context.