length returns the length (number of characters) in a string. Because you were setting the string to empty I used length to test for that condition and skip the empty string.

Others have provided better solutions. I was more interested in keeping to the essential structure of your code and using that as a springboard for teaching a little Perl. I seem to have achieved that. :)

DWIM is Perl's answer to Gödel

In reply to Re^5: Primes. Again. by GrandFather
in thread Primes. Again. by Andrew_Levenson

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