this post was submitted on 31 Oct 2024
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Programmer Humor

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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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[–] yrmp@lemmy.world 6 points 4 days ago (3 children)

Regex should generally be avoided wherever possible.

[–] NateNate60@lemmy.world 13 points 4 days ago (2 children)

Yeah but it's just so tempting... It validates so many inputs so easily...

[–] yrmp@lemmy.world 12 points 4 days ago (1 children)

And misses others you didn’t think about.

[–] gwilikers@lemmy.ml 6 points 4 days ago

Yeah, I've found myself wasting quite a lot of time thinking of the 'perfect regex' for task X only to realise that I could have avoided doing so by simply taking a different approach.