rklaehn

12 ms·

151.
by rklaehn 4y ago
ipfs-embed is using rust-libp2p and official protocols like gossipsub. So for that it is fully compatible with the ipfs network. At least as compatible as you can get when the specs are sometimes vague. Bitswap has a compat mode, but when t
152.
by rklaehn 4y ago
I will talk about it at IPFS camp 2022. I hope it will be recorded. Here is my talk about actyx from IPFS camp 2019: https://www.youtube.com/watch?v=Qzu0xtCT-R0 . It does not go into much technical details, and it does not
153.
by rklaehn 4y ago
It has some performance and reliability problems. Some of them are just a matter of writing a better implementation, some are more conceptual. But the basic principle of a content-addressed, distributed file system is desperately needed, an
154.
by rklaehn 4y ago
In recent years there has been a large growth of alternative IPFS implementations. Partly because of different needs, partly because of unhappiness with the performance and reliability of the go-ipfs implementation. At my previous company a
155.
by rklaehn 4y ago
If you run an open gateway, people can indeed request content via your gateway unless you have explicitly blacklisted it. But if you run just a node, everything that is on the node is there because either you have added it or you have expli
156.
by rklaehn 4y ago
There are many non criminal use cases for private electronic transactions - just as there are for cash. So why is it a crime to build a thing that has both legal and illegal applications, like knifes, guns, dollar bills, gold coins, ... ? A
157.
by rklaehn 4y ago
In rust, you can use the excellent anyhow crate https://docs.rs/anyhow/latest/anyhow/ . It has various ways to add context to an error, and will automatically attach a stack trace with the backtrace feature.
158.
by rklaehn 4y ago
There are also big cities outside America. Plenty of helicopters in Sao Paulo... https://www.youtube.com/watch?v=uiybWbyfQIY
159.
by rklaehn 4y ago
> Having motors along the whole trailing edge of the wing surely kills the glide ratio of this, right? The motors are running at reduced thrust and changed geometry during all parts of the flight. Regarding power loss: Last time I read a
160.
by rklaehn 4y ago
> Well if we're talking about commercial aviation, we're talking about jet fuel not gasoline. Regardless, it obviously matters a lot. A fully loaded 747 freighter has somewhere around 200 tons of jet fuel and a max payload of a
161.
by rklaehn 4y ago
Yes, and they are improving by a few percent every year. No major breakthroughs, but compounding improvements year over year, which do add up. Batteries have improved incredibly in my lifetime. As a kid I had an electric RC plane that barel
162.
by rklaehn 4y ago
This is a major milestone for them. Very nice to see the indicators suddenly transitioning to laminar flow. It is a shame that they only stayed in this flight regime for a few seconds, but they will now gradually expand the envelope. Here i
163.
by rklaehn 4y ago
The energy density of gasoline does not matter at all. Batteries are good enough for some applications, like short distance flights. And the operating costs for use cases where batteries work strongly favour batteries. Power density has n
164.
by rklaehn 4y ago
While in this particular instance the concerns might be unfounded, I think this raises an interesting question: what criteria do we have to attribute sentience to an entity? These are exactly the questions an AI Ethicist should think about.
165.
by rklaehn 4y ago
I tried this with real data (Satellite and Columbus module telemetry). At least for the timestamps, it is always a big win, because values are typically being sampled at a precisely or at least somewhat regular frequency. For sample values,
166.
by rklaehn 4y ago
I have found that a very good approach is to apply some very simple transformations such as delta encoding of timestamps, and then letting a good standard compression algorithm such as zstd or deflate take care of the rest. Delta encoding o
167.
by rklaehn 4y ago
Not sure what is so hard about this. The mission of Tesla is not free speech, but to accelerate the transition to sustainable energy. Tesla seems to be doing just fine without a PR department, so it seems he was right to shut it down. The m
168.
by rklaehn 4y ago
Indeed. The window of opinion that is allowed on twitter is anti space exploration and frankly anti-human. Elon needs a way to sway public opinion to allow mars settlement. Twitter might be that. Currently, SpaceX is blocked from doing the
169.
by rklaehn 5y ago
Friend of the author here. What is nice about this is that it allows you to get started with using rust for mobile development in no time at all. You need the usual tools (e.g. adb, llvm, clang), but once you got them you will have an andro
170.
by rklaehn 5y ago
Yes, there is a lot of awesome stuff that just works. SSB, the entire DAT/hypercore community, tools like syncthing that just do one thing well. I like the SSB approach of just embracing subjectivity. I was quite amazed when discoverin
171.
by rklaehn 5y ago
There are plenty of options for long term storage of large assets in a decentralised way. Also, decentralised does not have to mean that you don't use traditional cloud providers. What is missing is a really polished way to do decentra
172.
by rklaehn 5y ago
It is really hard to see how this is intended to work from the README. Where is a good example of the programming model? This one? https://github.com/freenet/locutus/blob/main/contracts/test_... Sin
173.
by rklaehn 5y ago
Yes, I also went with the 1st one. Basically the main thread sends a command to an io executor thread, and then waits on the result, which is done using atomics under the hood. See e.g. https://github.com/cloudpeers/rad
174.
by rklaehn 5y ago
This looks awesome. I have been playing with WASM and rust, trying to get rusqlite to work with persistence, among other things. I notice that you also came to the conclusion that having all io async is not the way to go for rust. How do yo
175.
by rklaehn 5y ago
This is great. My kids are very much into minecraft. I am very much into rust. I would love to help them make the step from playing games to hacking on games. This was very simple back when I was a kid, but is quite hard now. The games you
176.
by rklaehn 5y ago
Once mars settlement gets going, the moons of mars Phobos and Deimos also make for attractive targets. It might be that once starship works, we do all kinds of things, and it turns out that asteroids work better than planetary surfaces. So
177.
by rklaehn 5y ago
I remember as a kid, being annoyed that you get penalised for replicating. This is different to nature, where replicating gives you more "processing power". So I wrote a version where every thread was running at the same speed, bu
178.
by rklaehn 5y ago
Remember that they are trying to push raptor 2 to even higher pressures, and try to be as efficient as possible. And they want the engine to be rapidly reusable hundreds of times. I am sure they could run the engines at a lower chamber pres
179.
by rklaehn 5y ago
What is relevant is the sectional density, so how many kg you have per square meter, in SI units. https://en.wikipedia.org/wiki/Sectional_density A single larger sat would usually have a higher sectional density. But a
180.
by rklaehn 5y ago
The orbital data of all satellites is publicly available. It is calculated by the US space force (formerly US air force) spacetrack https://en.wikipedia.org/wiki/United_States_Space_Surveillan... . You can get the data

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