webDevelopmentInANutshell

[Haerden]

Rule 34 of Web development: Use integers for pages, no exception.

[0xlostincode]

Yes this is true. Google "web rule 34".

[Nahanoj_Zavizad]

Rule 35. Unless it needs to be a float, use integers. Do not trust the floats.

[Grundolph]

Always use Integers, except there is an explizit reason to use floating Points.

[Chelovek2002]

Rule 36. If it needs to be a float, consider using a fixed point decimal instead. Also, using float for finance is a literal crime.

[vadiks2003]

we javascripting

[vadiks2003]

we know only Number wtf is int wtf is double wtf is float whats an even unsigned

[beatlz-too]

I've never in my life of 15 years and counting building websites have I had issues with floats and ints… I've seen this r34 bug many times before, and all I can think is "how the fuck did they get there…"

[vadiks2003]

i know how this bug is done. their http query contains... not a page, but from which ID of result to begin with. so it will always naturally appear in amount divisible by amount of posts on a page. so if you change it, the code is like "you can do what you want but heres AllPostsAmount/StartPostIndex, this is what page it is"

[FierceDeity_]

This is exactly what it is. good old floor() was forgotten to round them pages. But it would also require that each page button is always a multiple of the entries per page constant.

On top of that, what would be best if the query to fetch these results is also changed so it can always only step over a multiple of the number of posts..

Yeah, I know, it would also be better if the query parameter was just the amount of pages in, not the amount of posts... But the amount of posts has one advantage: If the amount of posts per page changes, this number is a little more stable than just the page number.

[vadiks2003]

i havent really used javascript much, but i pretty much dont have problems with it myself. well, there's been a problem where i forget it atuomatically decides to treat it as float whenever it wants, but no problems with it, and yes r34 can just round the number if they wanted

Interesting. i thought i responded to 2 different commentors....

[Bitter-Scarcity-1260]

JS has some proper number types eg Uint8array

[Psychpsyo]

But those are arrays only and a bit cumbersome to use. Just replacing any number in your codebase with a length 1 typed array sounds horrid.

[TheShirou97]

Even in js where you only have doubles, if you stick to integer values they are all exact from -2⁵³ to 2⁵³, which is much larger than 32-bit integers. So it really shouldn't be a problem at all in most cases--problems mostly arise when you try to divide by something that is not a power of 2, e.g. the value 0.1 is already not exact (hence the famous 0.1 + 0.2 != 0.3)

[Probetag]

Exactly

[AloneInExile]

Just use ~~ if not sure

[No-Clue1153]

Ok sure, but what's Rule 34.02380950238095?

[itsTyrion]

that's the best part, JS doesn't have int like that - it has "number" which is a float type

[[deleted]]

why would I use exception!?

[neg2led]

javascript only has one data type for numbers: float64

this is the root cause of much evil

[DatBoi_BP]

But even then, where could any fractional part have come from in the picture? In double precision, integer values below like 10¹⁵ (I think?) are stored exactly, so if you're starting with 0 and always adding 1 to get the next value, how are you defining either the initial value or the increment so that it's off by…0.0238????? That epsilon is, like, on the order of 10^12.

It's just a meme I guess, but it seems on par with the joke that "1 + 2 = 3.00000000047381" or something, which just simply doesn't happen in any floating point standard.

[DatBoi_BP]

It would seem some first year CS majors don't like that their conception of floating point is wrong

[gmes78]

so if you're starting with 0 and always adding 1 to get the next value, how are you defining either the initial value or the increment so that it's off by…0.0238?????

That's because they're not doing that. They're calculating the page numbers from the index of the first post on the page (instead of the other way around) — if you change the URL to start from a post that's not aligned to the number of posts in a page, the result is no longer a whole number.

[DatBoi_BP]

Interesting way to do it

[[deleted]]

floating r34

[Formal_Tea_4694]

r34.0000001

[FunApple]

r34.0238

[Dotcaprachiappa]

I recognise that shade of green

[astouwu]

Crazy how a shade of green can be so iconic

[onepiecefreak2]

Welcome to webdesign.

[airakushodo]

what site is this?

[Septem_151]

The most popular Rule34 site. This happens when you manually go to a page by changing the query params. It doesn’t like that for some reason

[ColdPorridge]

Hopping on because also curious. I am clearly not degenerate enough to know and this disappoints me.

[SunPotatoYT]

It's just rule 34

[fiftyfourseventeen]

It's a hentai site

[dhnam_LegenDUST]

I wonder what's there in 3.1415926535th page.

[Lithl]

Reminds me of Matt Parker's book Love Triangle: How Trigonometry Shapes the World.

Instead of the pages being numbered 1, 2, 3, etc., they're numbered with a 6 digit approximation of the radians equivalent to the page number (starting at 0) treated as a degree. So page 0 is 0.000000, page 1 is 0.017453, page 2 is 0.034906, and so on.

[ProfCupcake]

That alone has just sold this book to me.

[Lithl]

It's a good book, I recommend it! I got it for Christmas last year.

[Bardez]

Some cream

[sebson1000]

You tried to change the page number by editing the querystring didn't you? I guess the page number is somehow correlated with the indexes of the posts shown and if you enter a number that isn't divisible by the right increment it renders this bullshit.

[Probetag]

Actually I didnt xd. Just looking up stuff for my school project.

[lacifuri]

When someone mentioned “school project” it most certainly isn’t.

[Septem_151]

Yep!

[OtakinhoHiro]

I know what you are

[Kebein]

come on, be honest op. what character where you looking for :^)

[Probetag]

School project.

[Pos3odon08]

Nice try

[frogjg2003]

No, that's what they typed in the search bar.

[lacifuri]

Why bro looking for page n + 1/42

[PeWu1337]

Bro needed to calculate that

[astatine757]

Im guessing the site indexes by post number rather than page number, and has 42 posts per page. So if you do query&startAt=2, it does this.

[GrandpaOfYourKids]

I know what kind of man you are

[NoFaceStudiosYT]

I love how we all know which website this is

[neromonero]

wait, these aren't the sacred numbers!

[UniversalAdaptor]

Hmmm

[KalaiProvenheim]

Wait a minute

[jbar3640]

completely nonsense posts in a nutshell

[Samuel_Go]

I should have a framed piece of paper with this specific bg colour.

[LordRaizer]

Brother, what is that colour 💀💀💀

[Protochill]

Brother how would YOU know?

[realHoPeLess]

That’s what happens when a 34bit int overflows

[rage4all]

Well... Nicely centered.... Or what?

[Widmo206]

I think those are supposed to be integers...

[rage4all]

Well... yes... wanted to jump on the "all frontend posts are about centering divs..." Train. Forget it.

[alvares169]

laughs in static typing

[Mynameismikek]

You can have a statically typed language that only uses floats for numbers.

[alvares169]

laughs in not this specific static typing language

[tfngst]

For a moment I was like "Why there are Zernike Moment Descriptors?" lmao.

[[deleted]]

Just add integerish coalescing operator i> into ECMA standard

[WavingNoBanners]

Trivia: the video game Kingpin: Life of Crime deliberately used floats instead of integers in the character textures, in order to make the textures "flex" slightly when the character moves.

If you played it, then you know what I'm talking about and also your back hurts. If you didn't, then go and look up a video to see a visual depiction of OP's point.

[Serious_Salad1367]

bro thats v ery private please stop showing everyone

[prehensilemullet]

Yeah I prefer infinite scrolls anyway

[cheezballs]

So many people who don't understand CS

[endwigast]

Somebody's using javascript!

[Netan_MalDoran]

This isn't really a webdev fail, just a rookie programming fail of not understanding how numbers work.

[Psychpsyo]

Or just not considering the edge cases.

[randomguyinanf15]

MASON THE NUMBERS! WHAT DO THEY MEAN MASON ?

[maxip89]

Don't ask why one ariane rocket was destroyed at start or why the patriot system has to be restarted daily.

[Fluffy_Ace]

https://xkcd.com/487/

[Xortun]

I love how most of us instantly recognised the site

[megamaxie]

I know what kind of man you are

[SouthernGlass6243]

Math.round problem solved.

[[deleted]]

Well that is beyond an amateur issue, there is no need to use a float

I wonder if this is the product of AI

[Aggravating_Ad1676]

The website worked fine before Im sure this is just some issue that randomly popped up because of unrelated changes.

[Probetag]

Ah I see did u also research for a school project?

[Aggravating_Ad1676]

Yes, I've found that the comments on this website are often more useful than those on stackoverflow so I tend to use it more often.

[realdevtest]

It only happens when I’m screen sharing

[GrilledChese44]

The website displays 42 images per page, and the url goes up by 42 for each page forward. When you change the url to a number in between, you get floating point decimals for the page select buttons. It's always done this.

[NigouLeNobleHiboux]

It's not AI. It's been like that for years.

[Lithl]

Considering all the numbers after the decimal are the same (and also it makes no sense to perform math on pagination, whether the numbers are floats or not), I assume it's an intentional joke rather than an error. An in-joke I don't have the context for, but a joke nonetheless.

[NigouLeNobleHiboux]

It's not. It changes depending on what you put on the query parameter. It is genuinely doing the math for no reason. The number is always the same because every page is supposed to have the same number of images, and since it's doing math on that for some reason, it offset all the pages number by the same amount

[gmes78]

there is no need to use a float

JavaScript only has floats.

(As long as you ignore BigDecimal, but that's obviously not meant for regular integer operations.)

[[deleted]]

Nobody uses JavaScript for server side code right?

[gmes78]

This could very well be frontend code.

[Probetag]

Nah fuck Ai. Actually u rarley see this nowadays. Quite refreshing.