soft-shell crab vietnam crab exporter

Simon Willison’s Weblog

18th March 2007 - Link Blog

Primality regex. A regular expression that can identify prime numbers. Unsurprisingly, this one comes from the Perl community.

Posted 18th March 2007 at 1:17 am

Recent articles

sqlite-utils 4.0, now with database schema migrations - 7th July 2026
sqlite-utils 4.0rc2, mostly written by Claude Fable (for about $149.25) - 5th July 2026
Have your agent record video demos of its work with shot-scraper video - 30th June 2026

This is a link post by Simon Willison, posted on 18th March 2007.

perl 29 primenumbers 1 regular-expressions 37

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe