Programmer Humor

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

submitted 3 weeks ago* (last edited 3 weeks ago) by NateNate60@lemmy.world to c/programmerhumor@lemmy.ml

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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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[–] Treczoks@lemmy.world 4 points 3 weeks ago

I have to admit that using CL-PPCRE does not really help me understanding the regexp any better. But this may be because I deal with complex regexps for decades now, and I just read them.