I'm unable to understand what exactly this code doing: exists $is_prime{$_} and $is_prime{$_}

Do you have any guesses?

Can you identify/name any part of the code as a type of thing (ex: variable , scalar...)?

In reply to Re: Unable to Understand grep and hash use for prime no. by Anonymous Monk
in thread Unable to Understand grep and hash use for prime no. by shankonit

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