• The Sinclair Executive (like most modern 7-segment calculators) has neither brackets nor a stack

    You linked to an image, which says nothing of the sort 🙄

    The fact any calculator does it purely left to right is the point

    Nope. RPN calculators do it differently too. I’m not sure what you don’t understand about specialised, niche markets.

    It’s… another way… to be done

    it’s another notation, not another set of rules 🙄

    Fool.

    says person who doesn’t know the difference between notation and rules 🙄

    • mindbleach@sh.itjust.works
      link
      fedilink
      arrow-up
      1
      arrow-down
      1
      ·
      1 month ago

      The images show += became + and nothing else changed.

      Notations being mutable is the point. They work however we say they work, and nobody but you believes in your special bullshit.

      • The images show += became + and nothing else changed

        No idea what you’re talking about. It shows nothing of the sort. It shows it still has a += button.

        Notations being mutable is the point

        Which is therefore irrelevant to the discussion of rules, which aren’t mutable 🙄

        They work however we say they work

        Notations do, and they all have to obey the rules 🙄

        nobody but you believes in your special bullshit

        says bullshitter still ignoring all these textbooks

        • mindbleach@sh.itjust.works
          link
          fedilink
          arrow-up
          1
          arrow-down
          1
          ·
          1 month ago

          still ignoring all these textbooks

          In that link you say a textbook I quoted is wrong.

          Here, above, I linked two images. They show += became + and nothing else changed.

          How brackets work is notation. Some notations don’t have brackets, at all. For example: the grocery-store calculators so common you insist they’re called “standard,” and RPN, which you’d apparently never heard of until I told you last year. Because you’re lying about being a teacher.

          • In that link you say a textbook I quoted is wrong

            The link takes me to the index, so as I already said, WHERE does it say I’m wrong? You can’t even tell me! Linking a random textbook doesn’t prove anything 😂

            I linked two images

            When I click on your link there is one image. 🙄 Why didn’t you just paste them in like any sane person

            How brackets work is notation.

            Nope, rules. How you write the brackets is notation. Good on you for proving you don’t know the difference

            RPN, which you’d apparently never heard of until I told you last year

            What a load of rubbish! 🤣🤣🤣

            Because you’re lying about being a teacher

            says the proven liar, who has lied about what textbooks say, and how calculators work 🙄

            • mindbleach@sh.itjust.works
              link
              fedilink
              arrow-up
              1
              arrow-down
              1
              ·
              1 month ago

              Linking a random textbook doesn’t prove anything

              Oh.

              Oh you’re actually illiterate.

              Nothing else would explain how you can’t figure out plain English text quoting the textbook and specifying the page number.

              In light of that disability, I can almost forgive the stupidity of insisting brackets aren’t just notation, when some notations don’t have brackets, period. RPN has a stack, which algebraic notation does not. Grocery-store calculators have neither.

              • Oh you’re actually illiterate

                No, I just don’t know which part of the book supposedly proves me wrong, and since you can’t tell me which part does so, I’ll take it that none of it does 🙄

                Nothing else would explain how you can’t figure out plain English text quoting the textbook

                Says person who thinks “means” means “identically equal” 🤣🤣🤣

                specifying the page number

                The link didn’t specify a page number. I already told you it opened up at the index. Your supposed link to 2 images only linked to one image also. you seem to have an issue with making links 🙄

                In light of that disability

                Your disability with making links that work?

                I can almost forgive the stupidity of insisting brackets aren’t just notation

                says the person actually insisting that they aren’t just notation 😂

                don’t have brackets, period

                As was the way in Maths for the many centuries preceding the use of brackets in Maths, such as 2+3x4=14 🙄

                RPN has a stack

                And each paired operation on the stack is treated as though in brackets and evaluated before anything else, as per the order of operations rules 🙄

                which algebraic notation does not

                Right, it has explicit brackets

                Grocery-store calculators have neither

                They have a stack

                • mindbleach@sh.itjust.works
                  link
                  fedilink
                  arrow-up
                  1
                  arrow-down
                  1
                  ·
                  1 month ago

                  If I say it’s on page 27, do you understand which page I’m quoting, that specifically says you’re full of shit? Because I did, and you are.

                  They have a stack

                  They do not. Four-function calculators have an accumulator.

                  RPN still does not have brackets. It hasn’t magically sprouted them since I had to introduce you to the concept, an entire year ago. Computers mostly reduce bracketed notation to RPN… not the other way around. There is no need for brackets of any sort, explicit or implicit, when using a stack and an accumulator. 2 2 3 + / doesn’t need anything “treated as though in brackets” unless you’re trying to explain it to a child who stubbornly insists there is only one way to do math and yes-huh there must be brackets somehow.

                  • They do not

                    says person who is unable to provide any evidence of such 🙄 guess what happens when you press the +/= followed by an x, it evaluates it and puts it on the stack 🙄

                    Four-function calculators have an accumulator

                    OMG. same same - it’s a one value stack 🤣🤣🤣

                    RPN still does not have brackets

                    In the foreground. They are still being added in the background

                    It hasn’t magically sprouted them since I had to introduce you to the concept

                    Which you didn’t, and they’ve always been there, just like the unwritten + sign in 3-2

                    Computers mostly reduce bracketed notation to RPN

                    No they don’t. They use the stack when parsing the expression, represented on paper with a binary tree

                    2 2 3 + / doesn’t need anything “treated as though in brackets”

                    Yes it does. It treats it as (2+3)/2 🙄

                    unless you’re trying to explain it to a child who stubbornly insists there is only one way to do math

                    So you’re admitting to being a child. That explains a lot 🤣🤣🤣

                    yes-huh there must be brackets somehow

                    Yep, now you’re getting it! 😂