Skip Navigation

InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)P

PeriodicallyPedantic

@ PeriodicallyPedantic @lemmy.ca

Posts
39
Comments
1933
Joined
3 yr. ago

  • That's some awful impressive goalpost shifting. Gold medal mental gymnastics winner.

    And here you are, still unable to explain why prefix and postfix notation don't have an operator precedence. I'm still waiting.

    I already told you 3 times they obey the same rules

    They literally don't, and I defy you to show me a single source that tells you that prefix or postfix notation use PEDMAS. I'll even take Quora answers.Heck, I'll even take a reputable source talking about prefix/postfix that doesnt bring up how order of operations isn't required for those notations.

    Nope. Doesn't say that anywhere. Go ahead and screenshot the part which you think says that. I'll wait

    Right here:

    Infix notation needs extra information to make the order of evaluation of the operators clear:

    rules built into the language about operator precedence and associativity

    Which you attempt to retort with

    BTW this is completely wrong...

    But then you go on to say something to the effect of "anyone who knows the rules can the extra information". Which is both unsubstantiated given the long history of not having PEDMAS, but also kind of a nothingburger.

    Doesn't say that either. 🙄 Again, provide a screenshot of where you think it says that

    It's literally the whole thing. Did you notice how they never discuss the need for operator precedence, or use operator precedence?

    Build for me a prefix or postfix equation that you think is changed by adding parentheses (eg overriding the natural order of operations), and then go ahead and find a prefix or postfix calculator and show me the results of removing those parentheses.If you read the rules for those notations, you'll see pretty clearly that operator precedence is purely positional, and has nothing to do with which operator it is.

    Note that I always cite Maths textbooks

    No, you've show a screenshot from a random PDF. What math textbook and what edition is it?

    The fact you think that factorization has to do with order of operations is shocking. Yes the multiplication is done first, but not because PEDMAS. The law is about converting between a sum of a common product and a product of sums. No matter how you write them, it will always be about those things, so the multiplication always happens first. It doesn't depend on PEDMAS because without PEDMAS you'd simply write the equation differently and factorization would still work.It's crazy that you're not able to distinguish between mathematical concepts and the notation we use to describe them.

    But putting that aside, that's not a proof of PEDMAS. If PEDMAS is an actual law, then there will be a formal proof or theorem about it. There are proofs for 1+1, if PEDMAS is a law then there will be an actual proof specifically about it. Not just some law and then you claim it follows that PEDMAS is true, an actual proof or theorem, or an textbook snippet explain how it is an unprovable statement.

  • NORAD worked with jets of other kinds, without the interplane networking, before the f35 existed.

    To say that they depend on some feature or ability of the f35 is disingenuous.

  • Why would the Jets have to be f35s?

    The agreement existed before f35s existed, so it can't be due to something unique to the f35 itself.

  • They say, as though if we agree they won't simply use the same threat later for something else, and then ignore the agreement when it suits them.

    Might as well just ignore the threat

  • I already scare the baddies away 🥲

  • What is up with Pooh's face? Is this AI?

  • Left to right is a convention, yes, doing Multiplication and Division before Addition and Subtraction is a rule 🙄

    A claim entirely unsupported by the textbook example you provided. Nowhere does it say that one is a convention but not the other, it only says that removing brackets changes the meaning in some situations, which is fully within the scope of a convention.

    For the 3rd time it does have order of operations 🙄You just do them in some random order do you?

    There you go again, just admitting you don't know what postfix and prefix notations are.If you're ordering your operations based what the operator is, like PEDMAS, then what you're doing isn't prefix or postfix.

    I'll tell you what, here is a great free article from Colorado State university talking about prefix, postfix, and infix notations.Note how it says the rules about operator precedence are for the notation which itself is a convention, as all notations are, and how prefix and postfix don't need those rules

    says person who doesn't know the difference between conventions and rules, and thinks postfix notation doesn't have rules 🙄

    How embarrassing for you.Here are some more materials:

    But to top it all off, if this was truely a law of mathematics, then show me a proof, theorem, or even a mathematical conjecture, about order of operations.

  • You're not familiar with the rapper Little Johnathan?

  • The time to release this was before they were all dead or near enough to it.

    Although if they all moved to Alberta, that'd explain some things

  • You're thinking of sheet. Sleet is the act of ejaculating onto something

  • While I agree in principle with removing X, it's also important to communicate with people where they actually are.

  • Is now a paid feature? Was playback over 2x (through the official app) ever supported for free?

  • In your screenshot of a textbook, they refer to it as a convention twice.

    And you still haven't explained prefix or postfix notation not having order of operations.

    Get rekd idiot

  • I don't really think that is true, those big wood TVs mostly aren't especially stylish, and neither are recorded players. Although style is obviously subjective so I suppose our miles vary

  • On CloudFlare, user224.com renews annually at less than $11

    That's where I got my domain (I was using them at the time, but it doesn't matter), for that price, and that includes whois privacy.

  • I can't answer many of the questions here, but I can help a little with two:

    If you're worried about noise, don't get ironwolf drives. I just did and they're noisy af. I brought some sound absorbing foam to put around the place where I keep my NAS, because they're so much louder than I expected.

    Don't open up a port in your network. Use something like tailscale to connect your devices to your home network, or rent an VPS to run a secure tunnel using pangolin (you'll need to look into bandwidth limits).

  • Perceiving the effects isn't the same as perceiving the object, unless you take an extraordinarily pedantic definition of "perceive".

    And considering an individual electron to be an object that you perceive is likewise not commonly an everyday occurrence, unless you take a likewise pedantic definition of "object".

    And even the word "perceive" was my choice of word, describing specifically that I believed that the OP meant to exclude things like subatomic particles. So even in the end you're still trying to argue that I didn't really mean what I meant, due to word choice, which is also a very pedantic thing to do

  • Ah, RP, soBottol of wotta

  • Are you theBuh'oh ah wa'ahOrBah'ol ah wa'erOrBo'el a wo'ahType of English?

  • Showerthoughts @lemmy.world

    Midnight is a stupid time for the clock to roll over to the next day

  • Linux Gaming @lemmy.world

    Good head-to-head reviews of handhelds that can run bazzite

  • Mildly Infuriating @lemmy.world

    Handheld PC reviews only cover Asus and Lenovo.

  • Showerthoughts @lemmy.world

    If eating a banana is ~0.1μSv, then what is holding a banana for an hour?

  • Showerthoughts @lemmy.world

    Performative vegetables: veggies you pack in your kids lunch even though you know they won't eat them

  • Showerthoughts @lemmy.world

    It would have been really funny if a video game ejected the disk if you lost too many times

  • Showerthoughts @lemmy.world

    I'm glad I got a glass dinner table: otherwise I'd never know how much gunk my young child smears in the underside of the table

  • Lemmy Shitpost @lemmy.world

    Quick Shot

  • Lemmy Shitpost @lemmy.world

    I don't piss in the shower, that's gross.

  • Showerthoughts @lemmy.world

    The movie cars is crazy

  • Showerthoughts @lemmy.world

    How do people like toast and bread rolls, but not bread crust?

  • Mildly Infuriating @lemmy.world

    Low flow toilets

  • Showerthoughts @lemmy.world

    Everyone knows what first aid is, but what is second aid?

  • Lemmy Shitpost @lemmy.world

    Sitting on the toilet

  • memes @lemmy.world

    It's not funny, we need to talk to you

  • memes @lemmy.world

    Gotta make sure we're under warranty

  • Lemmy Shitpost @lemmy.world

    I miss when you could get a flagship phone that could fit in your hand

  • Lemmy Shitpost @lemmy.world

    I kinda feel like if I had one good fart, that'd really sort things out for me right now

  • hmmm @lemmy.world

    hmmm

  • Lemmy Shitpost @lemmy.world

    Mmmm spicy Kraft Dinner Mac&cheese