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Oh boy what a beautiful regex. I'm sure it does something logical and easy to understand.(lemmy.world)

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NateNate60@lemmy.world
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^.?$|^(..+?)\1+$

<answer>

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

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

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Speiser0@feddit.org
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Regular expressions in general, and automata theory, sure you should know about that. But a specific extended regex language like here? That’s like saying you’re shit at coding if you can’t do <insert arbitrary programming language here>.

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