Yeah, it's a pretty old trick. I recall someone showing it off on #perl in about... | Hacker News

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davidw on July 16, 2009 | parent | context | favorite | on: Regex to check for prime numbers

Yeah, it's a pretty old trick. I recall someone showing it off on #perl in about 1997.

berntb on July 16, 2009 [–]

Search for "Prime" on this insanely fun page, to see where it came from:

http://www.cpan.org/misc/japh

(Hmm... I'll use that as a fortune file. Just need to remove extra '%', if fortune barfs on them. Ah, haven't had fortune in my login since the 90s.)

davidw on July 16, 2009 | [–]

Abigail! Bingo, that's who I recall posting it.

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