cesarb

97 ms·

841.
by cesarb 3y ago
> The simple question to ask yourself is why do battery installations always get quoted in units of power - GW - and not units of energy, GWH - which is what we actually use? For the same reason gas power plants and hydroelectric power p
842.
by cesarb 3y ago
> Construction on Watts Bar 2 began in 1973 but was suspended in 1985. Work resumed in 2007, and the reactor came online in 2016. That seems to be common with nuclear power plants. The latest one near where I live (Angra 3) has been unde
843.
by cesarb 3y ago
> In the Desktop Linux ecosystem the added 'security' by Wayland is indeed marginal when every app can access the whole filesystem. That's no longer the case with flatpak apps, which are gradually becoming more popular; so
844.
by cesarb 3y ago
I'd like to learn about these ideal ways. The most usual way to share a contact I know of, other than typing its details by hand, is by forwarding the contact through WhatsApp, and then it still wouldn't have the email because it
845.
by cesarb 3y ago
> The difference is that in most other countries people don't use SMS. The difference is that in most other countries people don't use SMS to talk to other people ; receiving SMS messages from automated systems is AFAIK still
846.
by cesarb 3y ago
> Maybe the general pattern of letting people send messages to someone who’s installed then uninstalled the app? Sorry to anyone who’s tried to contact me on Signal or Snapchat over the past decade. At least for Signal and WhatsApp, the
847.
by cesarb 3y ago
> If one has a backup scheme where files are stored in a content-adressable store, I can see the efficiency. But I have never heard of such a scheme in the context of backups. One example of a system which does that is borgbackup. But ev
848.
by cesarb 3y ago
Wouldn't all these useless build artifacts be outside the .git folders?
849.
by cesarb 3y ago
AFAIK, they preallocate; and even on filesystems which support sparse files, most bittorrent clients have an option to always preallocate (to both reserve space and reduce fragmentation).
850.
by cesarb 3y ago
IMO, part of the issue is that something which used to be just a low-level optimization (don't store large sequences of zeros) became visible to userspace (SEEK_HOLE and friends). Quoting from this article: "This is allowed; its a
851.
by cesarb 3y ago
> They have a 16-bit Vendor ID. That's 65,535 vendors supported. Globally. Ever. Isn't that the same as USB or PCI? Both also have a 16-bit vendor ID.
852.
by cesarb 3y ago
> We had propulsive rocket landings in the 80's. Didn't the Apollo project use propulsive rocket landings to land on the moon (which was kind of necessary due to the moon's lack of a dense enough atmosphere)? IIRC, that wa
853.
by cesarb 3y ago
> With Type A for 127V, the worldwide standard for 120V plugs. That would be going backwards, and losing all the safety features of the new NBR 14136 ("type N") standard; to make it worse, we already did use something like &quo
854.
by cesarb 3y ago
> We've put a dedicated section called Media in about:support, it has decoding capabilities I see, I hadn't found it when searching for the codec name because it only said something like "Information not available. Try aga
855.
by cesarb 3y ago
How can I confirm whether Firefox is actually using hardware decode for videos on my machine for a given codec? Is there a magic keyword I should search for within the about:support page, or is it recorded somewhere else? Mine shows for ins
856.
by cesarb 3y ago
The only laptops I've seen doing that are Apple laptops, for some reason other laptop brands do not seem to have that problem.
857.
by cesarb 3y ago
I have a friend who did that; he put one of these relays on the apartment's power panel, so the whole apartment was protected against voltage dips or too short outages. It might not be a common consumer item, but it's a readily av
858.
by cesarb 3y ago
> In the standard socket, you can have 10 amp, 15 amp or 20 amp, and they all have different sized pins. Yeah, Brazilian NBR 14136 does that too. It has 10A and 20A variants, and the only difference is that 20A has slightly larger pins,
859.
by cesarb 3y ago
> How would a power dip damage an appliance? For AC motors, the lower voltage might mean they do not have enough power to turn, so all the power they consume becomes heat in the motor windings (and since they're not turning, there&#
860.
by cesarb 3y ago
My first guess would be something like a broken neutral wire, making the neutral voltage depend on the imbalance of the load between the AC phases. From the little I understand about it, you could have up to the phase to phase voltage betwe
861.
by cesarb 3y ago
> just imagine if a small portion of standard-looking outlets did not output 220V (or whatever standard you have) and say 330V. We have something like that here in Brazil. On cities which use 127V as the standard voltage (some cities use
862.
by cesarb 3y ago
To emphasize this point: on 64-bit x86 with frame pointers, you have twice as many registers as on 32-bit x86 without frame pointers, and these registers are twice as wide. A 64-bit value (more common than you'd expect even when poin
863.
by cesarb 3y ago
Yes, but the times when you found these patterns (and managed to get a smaller output) will be matched by the times you found no patterns (and therefore the output was larger), such that the average compression ratio over a large enough amo
864.
by cesarb 3y ago
> Encrypted data is bits and bytes like everything else. You can compress it. (Maybe not as well as unencrypted text, but still.) Due to the pigeonhole principle, to be able to make some inputs shorter you have to make some inputs longer
865.
by cesarb 3y ago
> I haven't seen a car that does not need a physical plug and someone getting out to do it. AFAIK, the Formula E safety car charges without a physical plug or someone getting out to do it (which is important for safety because it ha
866.
by cesarb 3y ago
> It's impossible for engineers to foresee every possible failure mode and program for it. Playing devil's advocate: you don't have to. It just has to be better than a pair of experienced airplane pilots working together.
867.
by cesarb 3y ago
> I'd still be concerned about not being able to use the same key for proton mail and my desktop application Would it be possible to use different subkeys for each (a good idea in any case, since it would allow revoking them separat
868.
by cesarb 3y ago
> most filesystems have an underlying file handle which allow opening the file directly (see name_to_handle_at(2)/open_by_handle_at(2) on linux, but other systems also have something similar it's just not necessarily exposed to
869.
by cesarb 3y ago
> I’ve tried to remove from pom.xml dependencies which are listed there but not used in the source code and it was surprisingly hard to do. You probably already know this, but since Java has dynamic loading of code, even if the dependenc
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by cesarb 3y ago
> Unless you’re on a Mac, or iPhone. Where you can choose between Firefox and safari. AFAIK, you cannot, on iPhone you're forced to use Safari (all other browsers forced by Apple to be reskins of Safari).

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