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elteto

4,723 karma · joined May 12, 2012

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elteto··on Blue Origin reaches orbit on first flight of its titanic New Glenn rocket
It’s just people looking for something to crap on. God forbid those engineers celebrate years of their own work.
elteto··on Two fire experts interviewed about L.A. wildfires
I'm still looking for the incovenient truths because I couldn't find them in that article... A couple thousand words with no real insight or information.
elteto··on C++26: A Placeholder with No Name
#pragma once is a de-facto standard now, and if it’s not in the actual standard then that says more about the failings of the standard writers than anything else.

And there’s absolutely no reason to typedef _standard_ int types anymore. Not in C, and definitely not in C++. That’s just crusty old practices. Maybe if you want to have nice short types like u8, i8, etc, I can understand that. But SlangUint32 is just ugly.

elteto··on After a 24-second test of its engines, the New Glenn rocket is ready to fly
Not much, really. Most sensors are low speed: tens to hundreds of Hz. Then you have some high speed sensors, like strain gages, that are up in the 30+ kHz range.
elteto··on Java in the Small
Because I dislike interspersing executable statements at module level with function definitions. I’d rather have all code live inside functions and have one main entry point for the script. It’s just a personal preference, nothing wrong with not doing that though.
elteto··on Move semantics in Rust, C++, and Hylo
POD means you can memcpy without incurring undefined behavior, same as you would in C to copy a struct.
elteto··on Why America's economy is soaring ahead of its rivals
While that does absolutely suck, and I’ sorry you find yourself in that situation, it’s not a consequence of Obamacare. It’s just that the time you remember when things were better happens to be before Obamacare.

As another commenter said, there’s been an exodus of specialists from rural areas. This is a global phenomenon, not limited to the US.

elteto··on Why America's economy is soaring ahead of its rivals
This is literally not true if you live close to any urban center. Plenty of specialists available in any city. The US healthcare system is broken in many, many ways but "obamacare made me wait 6 months" is not one of them.
elteto··on Starlink Direct to Cell
Does your house not have a roof?
elteto··on Air traffic failure caused by two locations 3600nm apart sharing 3-letter code
Agreed. And most of the people with these attitudes have never written actual safety critical code where everything is written to a very detailed spec. Most likely the designers of the system thought of this edge case and required adding a runtime check and fatal assertion if it was ever encountered.
elteto··on The Saturn V FUELDRAULIC Gimbal System (1963)
Indeed it does. It was a notoriously fickle design to get right and for a long time they outsourced some parts of it to a company. One of the few things they outsourced. I remember you could find a listing on the company website for this very specific valve, with wink wink references to SpaceX.

I think they managed to bring it all in-house now.

elteto··on Limitations of Frame Pointer Unwinding
I think you are trying to make this out something that it isn’t.

Visibility at the “cost” of negligible impact is more important than raw performance. That’s it.

I’m a regular user of Linux with some performance sensitivity that does not go as far as “I _need_ that extra register!”. That’s what the majority of developers working on Linux are like. I think it’s up to _you_ to prove the contrary.

elteto··on Limitations of frame pointer unwinding
Didn’t really get the point of the post as it just presents something without a conclusion.

9X% of users do not care about a <1% drop in performance. I suspect we get the same variability just by going from one kernel version to another. The impact from all the Intel mitigations that are now enabled by default is much worse.

However I do care about nice profiles and stack traces without having to jump through hoops.

Asking people to recompile an _entire_ distribution just to get sane defaults is wrong. Those who care about the last drop should build their custom systems as they see fit, and they probably already do.

elteto··on Programming languages that blew my mind (2023)
I think he means that the stack is not something that you are forced to work with when programming in assembly. You can put data wherever you want (and are allowed to), and jmp into whatever random memory address you want. You can use CPU instructions that handle stack management for you, but you don’t _have_ to.
elteto··on Nvidia dethrones Apple as the most valuable company
I’m always skeptical of people giving away their alpha.
elteto··on First images from Euclid are in
But that’s just where you happen to draw the line and is not really relevant. You do believe in whatever your bestiary happens to contain, like magical burning bushes, giants, and super-strong men with magical hair. Whether a goblin is in there or not is an implementation detail.
elteto··on Zig is everything I want C to be
15 minutes… the horror.
elteto··on First images from Euclid are in
It actually is incredibly human-centered, to the point that humans were made in _his_ image and the Sun is supposed to turn _around_ the Earth.

But all this makes sense when you realize it’s a primitive human myth made by primitive people with limited understanding of the universe and the world around them.

elteto··on First images from Euclid are in
I do know one thing: fairy tales are not real.
elteto··on First images from Euclid are in
How arrogant and silly to look at these incredible pictures and think “Yep, this was all made for ME. I am the center of the universe!”.
elteto··on C++ proposal: There are exactly 8 bits in a byte
There are 4 bytes in word:

  const char word[] = {‘w’, ‘o’, ‘r’, ‘d’};
  assert(sizeof word == 4);
elteto··on New images show state of preservation of Ernest Shackleton's ship
I haven’t read Endurance (it’s on the list!) but was deeply impressed by this quote from a fellow explorer:

“For scientific discovery, give me Scott; for speed and efficiency of travel, give me Amundsen; but when you are in a hopeless situation, when you are seeing no way out, get down on your knees and pray for Shackleton.”

Sir Raymond Priestley

What a leader must Shackleton have been!

elteto··on Idiomatic Awk (2010)
I wanted to like awk and tried really hard but in the end was disappointed by what I see as unnecessary complications or limitations in the language. For example, it has first class support for regexes but only for matching. You can’t do ‘s/foo/bar’. I also found string manipulation to be cumbersome with the string functions. I would have expected a string processing language to have better primitives for this. And function arguments/variables are just a mess, it’s hard to understand how they came up with that design. It’s also quirky and unintuitive in some places you would not expect. Take the non-working example from the article:

    awk -v FS=';' -v OFS=',' 1
I expect this to change the change the separator in the output. Period. The “efficiency” argument for why it doesn’t work just doesn’t cut it for me. First, it’s very simple to do a one time comparison of FS and OFS, if they are different then you know you know you _have_ to perform the change, because the user is asking you! If I do this in reality and it doesn’t work I just switch over to sed or perl and call it a day.

All in all, perl -eP is a better awk. And for data processing I switched to miller. It has it’s idiosyncrasies as well but it’s much better for working with structured records.

elteto··on SpaceX launches mission for 2 NASA astronauts who are stuck on the ISS
A more apt analogy would be:

You are the captain and pilot of the ferry. And it is such a complicated ferry that you are extensively trained on how to navigate it. It is, in fact, so complicated and different that there are other ferries around but you can only sail yours. You can't just hop on another one and do the same trip.

You took this ferry to an island in the middle of nowhere and after you got there you realized the ferry was broken. Nobody knows how bad... it might snap in half in the middle of the return trip.

You have plenty of provisions for the next few months and you are not alone on the island. Other ferries still come and go but you can't just hop on those, you don't know how to operate them.

They sent one of those other ferries just for you with a smaller crew to accommodate you. Without it you are not coming back.

Is it a rescue?

elteto··on Hezbollah pager explosions kill several people in Lebanon
I think the value is in knowing the network and cross-reference against it. Innocent bystanders or people who happened to just go to the hospital today will probably fall off during this process. Not to mention that you can filter out by the type of injury to get a more accurate list.
elteto··on Hezbollah pager explosions kill several people in Lebanon
I wasn't thinking years, but months but I didn't know about the recent upgrade. At any rate, if the pagers allowed any data exfiltration they have been collecting that data since whenever the last upgrade was.
elteto··on Hezbollah pager explosions kill several people in Lebanon
This almost reads like science fiction, what an incredible attack from a technical POV. A couple of thoughts:

1. The beepers were compromised and have been for a long time. I don't know how easy it is to exfiltrate data from them if they are receive-only devices. At any rate it shows that Israel is capable of intercepting and manipulating low-tech comms. What's left for Hezbollah to use?

2. The next step is to hack into hospital record systems and get a list of all patients admitted today.

elteto··on The Laying of the American Trans-Pacific Cable (1903)
For an exciting and gripping story of the laying of the first Trans-Atlantic cable check out A Thread Across the Ocean, by John Steele Gordon. It is quite the page turner.
elteto··on Experience the Apollo 11 Lunar Landing
Kranz, while an important character in the Apollo saga, wasn’t even an astronaut.

I don’t know what history puts him “ahead” of Neil. Or even ahead of the other greats like Grissom.

elteto··on X ordered to pay €550k to Irish employee fired after yes-or-resign ultimatum
EU lifestyle with a US salary is the perfect combination. I don’t know if you have that, but if you do, keep it! :)
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