Viewing profile — nightcracker

Yes, I am aware it has been 'superseded' but in my experience for lossless compression it's still usually better.

QOI_DIFF24 { u8 tag : 4; // b1110 u8 dr : 5; // 5-bit red channel difference: -15..16 u8 dg : 5; // 5-bit green channel difference: -15..16 u8 db : 5; // 5-bit blue channel differe…

You could still stream the pixels, you'd just have to stream them in Z order. This may seem pedantic, but this applies to any mismatch between the order in which you store pixels a…

When I download that PNG file it is 10785 KB. If I re-encode it using FLIF 0.4 (to my knowledge still the best off-the-shelf lossless image compression) it is 7368 KB. That's 57% o…

Copying the question text verbatim certainly is copyright infringement (and I would guess unlikely to be fair use, but I'm not a lawyer). If you give the problem in your own words,…

Looking through some of these URLs through Google cache, a lot of these contain verbatim copies of the problem text. Fair enough, legally speaking, if you are the copyright holder.…

I don't know, only have some theories. 1. The name isn't particularly catchy or descriptive. It is the correct name for the data structure, but not too many people know the data st…

SlotMap literally cannot, because it must keep track of versions of the used slots, and the slots include the memory space for the data. DenseSlotMap sort of can. It still can't re…

This reddit post is such a shame, and I wish people would stop referring to it. The benchmarking code is not apples to apples at all in many places. E.g. to benchmark removals they…

There is no fragmentation whatsoever in the traditional sense (unusable gaps left due to size mismatches), because a slotmap only stores a single type of value. Thus every slot is …

Hi, author of slotmap here if anyone has any questions. Slotmap is essentially the Vec + indices solution, while allowing memory to be reused. It is still completely safe, as it au…

> It's not hard being faster than zip if you are not compressing/uncompressing Actually, since CPUs are so fast and disk IO is so slow, it is essentially impossible to beat a prope…

If a significant amount of your new customers find your physical shop through Google maps, what can you do? If someone wants to find a hardware store near them, good chance they'll…

I did miss that, oops. That said, it's again unclear if that curve is pre- or post- biased sampling. If it is on the original data it is quite good, but with a heavy biased sample …

Very sloppy statistics. A lot of explanatory analysis on the model is done but the model is hardly justified in being predictive in the first place. The paper ( https://journals.pl…

No, it is a Pokémon reference to the very similarly named Excadrill.

Softball is a bigger ball, yes. But it's not lower velocity, at least if you consider the relevant metric: time from pitcher to plate. Because softball also pitches a lot closer to…

See my other comment, it would also immediately be constructive: https://news.ycombinator.com/item?id=29022963

Regarding (b), a non-constructive proof of P=NP does not exist. Because such a proof is immediately constructive. You can create an enumeration over all Turing machines, and run ea…

From what I have read (I don't do 3D modeling myself) Blender has overhauled its UI significantly over the past couple of years to great praise of a lot of people.

I would guess that India is too large to meaningfully include in such a statistic. On average in the country English literacy could be quite poor while in the relevant tech hubs it…

Rust sidesteps issues like this entirely through its Editions. Code from different editions can all each other, but editions can introduce breaking changes. For example, in Rust 20…

> I can zoom in and see lots of different colors If you zoom in further, you'd soon realize your screen is nothing but pure red, green and blue subpixels at varying intensities.

PNG is lossless, so it really does.

See also https://allrgb.com/ .