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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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yrmp@lemmy.world
6 points

Regex should generally be avoided wherever possible.

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NateNate60@lemmy.worldOP
13 points

Yeah but it’s just so tempting… It validates so many inputs so easily…

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yrmp@lemmy.world
12 points

And misses others you didn’t think about.

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gwilikers@lemmy.ml
6 points

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.

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