• FooBarrington@lemmy.world
    link
    fedilink
    arrow-up
    21
    arrow-down
    1
    ·
    1 year ago

    Does every Regex contain a reverse negative lookup? Do I need to know how to do a reverse negative lookup to write a Regex?

    If not, why are you asking?

      • FooBarrington@lemmy.world
        link
        fedilink
        arrow-up
        17
        arrow-down
        1
        ·
        1 year ago

        I have written dozens upon dozens of Regexes without using reverse negative lookups, but I guess according to you I don’t really know Regexes because I haven’t used those specific features?

        You don’t need to know all about a subject to know a subject.

          • FooBarrington@lemmy.world
            link
            fedilink
            arrow-up
            9
            ·
            1 year ago

            I’m not sure why you’re bringing up efficiency, I’m not talking about that. If I don’t understand a topic, I can’t do things with the topic. I use Regexes, so I must at least somewhat understand Regexes.

            I’m saying if you look at my code, and I write a lot of negative lookups in dev ops for data validation, you can’t read my code. It’s nothing personal.

            Well, earlier you were saying that I don’t know Regexes if I don’t know reverse negative lookups. Funnily enough Regex101 would help me understand your code in this case, so you were wrong on that count too.