• d_k_bo@feddit.de
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    1 year ago

    I recommend using https://regex101.com/

    It explains all parts of your regex and highlights all matches in your example text. I usually add a comment to a regex101 playground if I use a regex in code.

          • 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?

              • 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.

      • doostein@beehaw.org
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        1 year ago

        I disagree. I found it to be incredibly useful when I knew what regex was and that I needed it, but I couldn’t piece together a single string with it.