• FooBarrington@lemmy.world
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      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?

      • Aniki 🌱🌿@lemm.ee
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        1 year ago

        Because learning a bit of regex isn’t the same thing as learning all of regex and the distinction is important.

        • FooBarrington@lemmy.world
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          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
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              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.