geokon

1,774 karmajoined hace 10 años

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hace 7 horasdiscuss

My feel would be that 2.4 has the advantage of being much longer range and there are plenty of sources for 2.4 - if you wanted to look at back-scatter and not just sources of emission. The primary demo of this piece of equipment is looking at radiation sources, but as you guys show there are plenty of other possible applications. I feel like since 2.4Ghz stuff has been around for ages.. the stuff should be much cheaper? Just a guess though :) Would be curious to know what the reality looks like

And cool to see you guys are from Santa Barbara. Lots of relevant talent there :)

hace 5 díasdiscuss

One thing to note that's maybe less obvious is that you can destructure some keys with the check and others without. This makes the function interface a bit self-documenting. At a glance you see that the username is required and other parts are maybe not.

    (defn my-function
      [{:keys! [username]
        :keys  [firstname
               lastname]}]
      (do-stuff username
                firstname
                lastname))

A minor downside is that now it seems `nil` is even more overloaded b/c you can explicitly pass in a nil and give it a special meaning. This generally cascades in to messyness (better to have a special key like `:missing-username`).

Feels like throwing an error on nil would have been better/simpler? But I'm sure there's an angle I've not considered

hace 9 díasdiscuss

> looming requirement that all Android developers register themselves centrally

Does this somehow also apply to developers in China? Are Chinese OSs (Vivo/Honor/Oppo/etc.) entirely forked off of Google's Android?

Is the solution to just a Chinese phone without the Play Store?

hace 9 díasdiscuss

An FDroid desktop client that adb installs APKs would actually be lovely. I pretty much exclusively use FDroid, but I gotta say I unfortunately find all their frontends to be rather buggy and with very little user feedback when things break (repo updates are hard to observe, downloads hang, updates mysteriously fail)

hace 11 díasdiscuss

There are plenty of Icon packs suitable to all aesthetic preferences. Just nobody is going to write a blog post ragging a some Icon Pack b/c if you don't like it then it's trivial to change to a "better" one (that said I still think the arguments in the blog post are interesting and worth considering)

To the blog's point - many KDE Icon Packs have non-uniform shapes (ex: I'm currently using Newaita)

hace 11 díasdiscuss

"Correct" modern C++ eliminates whole classes of problems. You can of course still write C code, but no one would merge that in to their codebase

Theyre both complicated languages in their own way :)

hace 11 díasdiscuss

I think there are very few places where C makes sense and C++ doesn't. Its mostly legacy things like the Linux Kernel, or more aesthetic projects like demoscene or suckless. Where its easier to agree to write C instead of trying to agree on what subset of C++ to use (even then its usually C with a mishmash of C++ ergonomics)

That said, leafing through the first chapters of "Expert C Programming" should dissuade anyone of the idea that C is a simple language. It'll leave you amazed anyone's been able to write working programs in it

hace 13 díasdiscuss

Ah okay. That's a good insight! and something to keep in mind. There is a reality distortion lens to it all in the end. As you say, people want to explore the frontier of technology

hace 16 díasdiscuss

Are pretty much all surface mounted components fine with this?

I wanted to waterproof a micro devboard by submerging it in mineral oil. I was worried the board may delaminate or components would turn to goop

hace 16 díasdiscuss

Seems like a fair play by Alibaba. However, is there any "open source" attempt at crowdsourcing distillation?

Like some place people can submit their chatbot convos so they can be aggregated?

Like an equivalent to OpenCrawl but for mining the models. It feels like thatd be a richer dataset than Alibaba generating queries and feeding them into Anthropic/OpenAI models

PS: Does anyone know how when companies distill each others' models the synthetic queries are generated? Im just assuming theyd be worse than organic ones

hace 22 díasdiscuss

Where do you find more nuanced discussions?

hace 22 díasdiscuss

I actually don't understand the tearing they're talking about. If the fields are final then you can't modify the Value Type anyway? And a simple write-lock bit for fat Value Types would solve everything while maintaining most of the performance benefits (both on read and write)

hace 22 díasdiscuss

Is there some reason there isn't simply a write-lock/semaphore on Value Types that are over 64bits? The overhead should beat pointer-chasing. I mean maybe someone wants to concurrently write to values from different threads with no coordination, but that's not super common. As you illustrate, having "fat" Value Types would open up a lot of potential.

In the current setup will a Pair Value Type be a compiler error, or will it silently just have bad perf?

hace 22 díasdiscuss

a few questions for the pros

> "The defining trait: no identity"

I get that this makes objects behave like primitive types. Maybe thats reason enough. But is it necessary for the performance boost and de-fluffing the objects? Seems like an orthogonal objective

> There’s a catch worth knowing about here, though: flattened data has to be readable and writable atomically (otherwise it risks “tearing” under concurrent access).

Isn't this a race condition and "undefined bahvior"..? Having to limit yourself to atomic sizes seems like a huge limitation, to accomodate what is most likely buggy code. Is all the effort only gunna help lil toy ColorRGB examples?

> The points array is a million pointers. Each pointer leads to a separate Point object lying somewhere on the heap.

Does this happen in actuality? One would assume the allocator tries to put stuff sequentially on the heap? Its not a guarantee as with these Value Types, but I'd think you could get similar-ish perf with prefetching in cache. I dunno whats happening under the hood.. But when writing Clojure apps the JVM always reserves absurd amounts of heapspace on my machine (to my annoyance). Id assume it can find some place to do contiguous allocations..

Which i guess gets me to my last question... where are the benchmarks broski? It all sounds great, but does it actually yield the insane speedups promised?

Great article, well written. But a benchmark would have been a nice "punchline"

hace 28 díasdiscuss

Do you have some concrete examples?

"Back-in-the-days" you'd click and stuff would instantly happen, and I don't remember anything being more difficult to visually interpret.

On my Kubuntu desktop if I disable all animations (the whole compositor) I don't feel there is an increased cognitive load of rescaning things - but maybe it's my preexisting memory of the UIs and certain baked in UI expectations. Maybe this animated stuff helps people that are computer illiterate? (software made for the lowest common denominator)

el mes pasadodiscuss

Hopefully people see this comment b/c mine was a bad/incorrect summary :)

I real liked the orgmode workflow b/c the code was self documenting in a sense. I had a very similar workflow for many years (though I've since stopped) But I do remember that in the leiningen days when I was first learning Clojure, the idea of tangling and attaching my own fork was just too intimidating and confusing. With the deps.edn workflow it'd have been less of a hassle now

Thank you for all your work. I still used geom basically every week (generating graphics for my PhD)

Your blog post is great. I think your point about the silo'ing and lack of cross pollination of idea between langs/frameworks is interesting, but also a product of just time-investment. I used to code C++ and the C++ gurus were always very miopic b/c they simply had no time for anything else.

To the last idea, I feel the ease of creating and having performance available is always in tension. I have a friend who works in Touchdesigner and I'm always left a bit embarrassed that no written programming language seems to hit the same level of productivity. Going down the stack can be fruitful, but I think there are still more levels of abstraction that need to be explored. At a high level.. even if you're writing immutable functional code.. it just all still feels too coupled to me. These days, I'm personally think the next step is something like Pathom. Where your declare decoupled relationships between inputs and outputs and have a engine derive your computation.

el mes pasadodiscuss

You can find his talk about it a bit on Twitter and in the Github issues. But as far as I remember it mostly boils down to the fact that thing/geom got very little traction and external contributions. He developed this huge ecosystem on his own to make digital art but it wasn't being really picked up by others. Digital art is typically quite collaborative with people giving workshops and stuff. The switch to TS was so that other's would join up and develop the library together.

Note that part of the problem was that the library was written in a highly unusual literate style. So you had to clone the repo, then use Emac's Orgmode to tangle it to get the Clojure source code. This created a lot of friction for people to contribute.

Also before deps.edn (Clojure built-in dependency management) was added to the language you had to use leiningen which didn't make using a locally cloned fork as easy as it is now (now you just point to the library file directory and it "just works")

el mes pasadodiscuss

It's extremely modular and simple and extensible. It's a collecting of small libaries that makes generating arbitrary vector graphics extremely fun. You have a base SVG layer and on top you have a charting library, 3D models and other stuff. It also comes with a ton of cool math mini libraries. If something is missing it's very easy to write your own.

All the pieces are very decoupled and in pure Clojure (unlike a lot of the heavier scicloj stuff that's being use nowadays)

el mes pasadodiscuss

I wonder if it can make a flexidisc

https://en.wikipedia.org/wiki/Flexi_disc

I remember to listening to some in my childhood and never understood why the tech was not the standard (relative to the brittle cumbersome vinyls). Maybe the sound quality is worse. Unsure

el mes pasadodiscuss

yeah, your overall point stands. Sometimes you can get a bit mixed up on "wait, does this take a File object or a string with the filename?". I guess my point was that because you program to interfaces this happens a bit less often than one would expect. If it can take a vector it can usually also take a list