wischi

joined 2 years ago
[–] wischi@programming.dev 30 points 2 years ago

Thank you very much 🫶. No it's not annoying at all. I'm very grateful not only for the fact that you read the post but also that you took the time to point out issues.

I just fixed it, should be live in a few minutes.

[–] wischi@programming.dev 5 points 2 years ago (1 children)

🤣 I'm not sure if you read the post but I also wrote about that (the paragraph right before "What about the real world?")

[–] wischi@programming.dev 5 points 2 years ago (15 children)

I'm not sure if I'd call it the "scientific" one. I'd actually say that the weak juxtaposition is just the simple one schools use because they don't want to confuse everyone. Scientist actually use both and make sure to prevent ambiguity. IMHO the main takeaway is that there is no consensus and one has to be careful to not write ambiguous expressions.

[–] wischi@programming.dev 9 points 2 years ago (2 children)

You should read the part about WolframAlpha in the blog.

https://www.wolframalpha.com/input?i=6%2Fxy+where+x%3D2%2C+y%3D3

[–] wischi@programming.dev 8 points 2 years ago* (last edited 2 years ago) (12 children)

In this case it's actually the absence of sources. I couldn't find a single credible source that states that ÷ has somehow a different operator priority than / or that :

The only things there are a lot of are social media comments claiming that without any source.

My guess is that this comes from a misunderstanding that the obelus sign is forbidden in a lot of standards. But that's because it can be confused with other symbols and operations and not because the order of operations is somehow unclear.

[–] wischi@programming.dev 3 points 2 years ago* (last edited 2 years ago)

This meme is specifically about the implicit multiplication because the article it links to is about that too.

But you are right there are a lot more "viral math" things than just the implicit multiplication problems 🤣

[–] wischi@programming.dev 7 points 2 years ago* (last edited 2 years ago)

It's not really a calculator engineering problem. If you don't have time to read the entire blog you should definitely check out the section "But my calculator says...". It's actually about order of operations regarding implicit multiplication.

[–] wischi@programming.dev 3 points 2 years ago

Thank you for your kind words, really appreciate it.

[–] wischi@programming.dev 4 points 2 years ago* (last edited 2 years ago)

Ooh now I get you, sry. True. But sadly you now know the truth and you have to be careful with the implicit multiplications on your tax forms from now on ;-)

[–] wischi@programming.dev 5 points 2 years ago* (last edited 2 years ago)

Thank you for reading the post, and thanks for pointing that out. Should be fixed and live in the next few minutes.

Update: Also fixed that sentence. Thank you so much.

[–] wischi@programming.dev 4 points 2 years ago (3 children)

That's the correct answer if you follow one of the conventions. There are actually two conflicting but equally valid conventions. The blog explains the full story but this math problem is really ambiguous.

[–] wischi@programming.dev 7 points 2 years ago (3 children)

What is the correct answer according to the convention you follow?

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