this post was submitted on 31 Oct 2024
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Oh boy what a beautiful regex. I'm sure it does something logical and easy to understand. (lemmy.world)
submitted 2 weeks ago* (last edited 2 weeks ago) by [email protected] to c/[email protected]
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^.?$|^(..+?)\1+$

Matches strings of any character repeated a non-prime number of times

https://www.youtube.com/watch?v=5vbk0TwkokM

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[โ€“] [email protected] 41 points 2 weeks ago (1 children)

knowing Matt Parker it only matches prime numbers or multiples of e or something.

looks at <ansewer>

Yeah see?