@NateNate60@lemmy.world to Programmer Humor@lemmy.ml • edit-28 months agoOh boy what a beautiful regex. I'm sure it does something logical and easy to understand.lemmy.worldimagemessage-square83fedilinkarrow-up1320
arrow-up1320imageOh boy what a beautiful regex. I'm sure it does something logical and easy to understand.lemmy.world@NateNate60@lemmy.world to Programmer Humor@lemmy.ml • edit-28 months agomessage-square83fedilink
^.?$|^(..+?)\1+$ <answer> Matches strings of any character repeated a non-prime number of times https://www.youtube.com/watch?v=5vbk0TwkokM
minus-square@explore_broaden@midwest.sociallinkfedilink5•8 months agoYes, the first one matches only 2 more characters while the second matches 1 or more. Also the +? is a lazy quantifier so it will consume as little as possible.
minus-square@Feathercrown@lemmy.worldlinkfedilinkEnglish3•8 months agoAh, didn’t know +? was lazy, thanks
minus-square@Feathercrown@lemmy.worldlinkfedilinkEnglish3•8 months agoI was like, why specify “one or more” and then make it optional? Isn’t that just .*?
Yes, the first one matches only 2 more characters while the second matches 1 or more. Also the +? is a lazy quantifier so it will consume as little as possible.
Ah, didn’t know +? was lazy, thanks
I thought, the +? was going to be a syntax error. 🙃
I was like, why specify “one or more” and then make it optional? Isn’t that just .*?