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ch

942 karma · joined February 21, 2007

hellertime.com hellertime@gmail.com

@hellertime

http://www.hackernewsers.com/users/ch.html

(My submissions here are sporadic, and unfocused. I tend to use HN as my set of bookmarks)

submissionscomments
ch··on Airbus proposes new drop-in airplane “cabin modules” to speed up boarding
This I think would be a very nice improvement. It would be interesting to see what regulations prevent such a model. After all we are just Self Loading Freight; why rely on the passengers for any part of the logistics chain while shipping people between airports.
ch··on Programming a Multicore Architecture Without Coherency, Atomic Operations (2014) [pdf]
Yeah it's not really detailed, which is unfortunate. Since it specifies that the process "stalls" one would expect busy-wait being the only viable strategy.
ch··on Difficult Times at Our Credit Union
Could someone just create Worldwide Credit Union and just require living on Earth to be the affiliation?
ch··on Jeff Bezos beats Elon Musk's SpaceX in the reusable rocket race
A click-baity title, but undoubtedly cool achievement. Watching the rocket toggle around in the last second hover before touching down was really neat.
ch··on Keeping the PilGRIM at a steady pace [pdf]
A slide deck overview of the PilGRIM processor design (references to which are otherwise sadly behind Springer Link paywalls: http://link.springer.com/chapter/10.1007%2F978-3-642-24276-2...)
ch··on General purpose analog computer
Well the GPAC is a model of computing, much like a Turing machine, so they are not the same thing, though certainly this model influences the work of FPAA's.
ch··on Totally Isolated TLS Unwrapping Server
Storing the private key material in a separate process is a nice touch.
ch··on Sgraffito
This is just the street art version of a fresco.
ch··on Cubetto Playset
This appears similar to the work in this research: http://researchspace.csir.co.za/dspace/bitstream/10204/7552/... -- something called Rock Garden, but I don't think they are related.
ch··on Transducers for Python
So if Clojure had some form of fusion of composed functions on lists, that would equate out to what transducers are doing?
ch··on AMPRNet: Amateur Packet Radio Network
I've been on a bit of a kick to try and understand how we could re-build the Internet and computing based on what could be pulled from the scrap heap, which lead me to cross paths with AMPRNet. Nifty idea, though with its limited bit rates, information dissemination would only be for those with long attention spans :)
ch··on AMPRNet: Amateur Packet Radio Network
Perhaps in a post-apocalyptic world this will be all that is left of the Internet. Though in a post-apocalyptic world there would be no one there to license the radio spectrum, and so why limit ourselves to HAM radio bands? -- Plus this all overlooks the need for power generation and storage in such a world :)
ch··on My Home-Built TTL Computer Processor
It would seem 4 4-bit word register files are all you could obtain from TI (http://www.ti.com/product/sn74ls670); I haven't dug deeper, but yeah as a bread-board layout you would need a lot of surface area to simulate even the smallest Mill. Cool idea though.
ch··on Yonatan Zunger about the Paris Attacks
Interesting.

I would still contend that one cannot take some form of ideology, "dial it up to 10" and then claim it is still that same ideology. What you instead have here is a set of liars that hide behind a name.

That said, it does seem that Wahhabism and Sunni Islam are perhaps a more favorable place for such extremism to culture and grow. So I concede this is as much a part of Islam as the next part (however non-mainstream or mainstream it may be).

Clearly the shift here is what allows such extremism to succeed, the funding, the teaching, the dispersion of such ideas, how are they not called out for what they are: callous and inhumane and insane?

Who is responsible for turning a blind eye for so long? Is it just tolerated because it happens 'Over There' (in this case I suppose 'Over There' would mean 'Not Here in Saudi Arabia' where the political base of this brach of Islam claims home). Or is this more like someones thugs getting out of control -- i.e. this is a sponsored movement and attempts to restrain it are actively interfered with!

I have more questions than answers! What a complex part of the world!

ch··on The design of the Strict Haskell pragma
Does the bang pattern have the opposite semantics when Strict or StrictData pragmas are in use? Can one recover lazy semantics inside a Strict module? That would be convenient/confusing!
ch··on Yonatan Zunger about the Paris Attacks
It's more like he is implying that something like Da'esh will exist no matter if Islam exists or not. Their brand of violence is not rooted in ideological beliefs but rather psycopathic killing for killings sake. That Islam allows a way for them to recruit does not mean they are Islamic only opportunistic. The other issues of famine, fear and a power vaccume are more likely the reason they can last for so long. Groups like this in the United States tend to burn out very quickly or reduce their violence to attacks on rivals and divirsify their actions to more capitalistic actions.
ch··on The first photograph of a human being (1838)
Its funny, I actually think when the picture was flipped back to how the photographer saw the scene, that it was a better composition. The road seemed unnatural in the original.

I wonder now if that is just some internal bias to it being "more real"?

ch··on Show HN: LJSON: JSON extended with pure functions
There are no free terms in any of these LJSON functions, since all the terms are explicitly named in the arguments. Globals would presumably get shadowed and so would not be captured.
ch··on Such container
It seems on mobile Safari it presents in a nearly unreadable script font (well readable but with much effort). On the desktop however it shifts to Comic Sans, which is perfectly fine for reading!
ch··on Satellite Internet gets a fresh look, cash infusion
When you say there isn't enough, is that there isn't physically enough spectrum, or is it just that there isn't enough licensable spectrum (or even enough available unlicensed spectrum)?

I am not very knowledgeable about things related to radio spectrums and so please clarify this for me.

What might the upper bound of radio broadcast data transmissions be if the entire radio spectrum could be allocated and given our current radio comms technology?

ch··on Monads Are Not Metaphors (2010)
I like this comment because it helps illustrate the subtlety of monads as they apply to programming.

I think mode C# programmers would likely think of ';' and '??' as syntax, and who is thinking of 'no-op' as anything!?

But if you were in haskell this would not be syntax, but just functions on an instance of the Monad type class.

Haskell could easily add some sugar to make these constructs syntax as well, but it would just be sugar -- and that is where the power, and confusion I think arises when most programmers think about monads.

ch··on Monads Are Not Metaphors (2010)
I think it has much to do with the abstractness of mathematics (especially category theory). Some just have a hard time anchoring the ideas to something concrete, and they are in need of that anchoring to make the ideas stick. With engineering and physics equations there is always something physical to relate them to (at least somewhere in the universe(s)) -- not to say there aren't harder equations to grasp in those fields too, but again that is typically trending into the more abstract (less macro) areas of the field. The trouble with math is sometimes you just have to work through equations enough until you form some intuition about how they work. Some folks just want to skip that step and others Oblidge them by assisting their mental model with metaphors which seem to never be universal enough -- if it were it would just be math.
ch··on ΕΥΚΛΕΙΔΗΣ: A Geometry Drawing Language
Neat. Add support for colors and one can recreate the diagrams found in Byrne's edition of Elements: http://www.math.ubc.ca/~cass/Euclid/byrne.html
ch··on Exploit to get root on OS X 10.10 fits in a tweet
"'Apple ships fixes for security in beta versions of future products, but does not fix current versions,' Esser noted."

Is that really a thing? Apple doesn't ship security updates? Or is that just trolling?

ch··on Our beautiful fake histories
I have to side with Joey on this one. Sure in a world like the Linux kernel, where things are still done via emailed patches, avoiding sending a patch-bomb to a maintainer warrants some editorial control on the history of a feature. However, like Joey, I tend to find beauty in the organic evolution of code. Plus I like others to see all the commits where I'm just cursing out build systems, or dev tools or just mumbling about a 'misspeeling'.
ch··on Amazon API Gateway – Build and Run Scalable Application Backends
"API Mullet" has got to be my favorite description of this type of system. Well done.
ch··on Tries and Lexers
Ah true I am incorrect on the lexer as a map. Had I thought on that half a second more I would have saved myself some embarrassment. :)
ch··on Tries and Lexers
Right, a lexer is a mapping function. A parser is a fold.
ch··on Startup attempting to use drones to plant 36,000 trees a day
Thanks for the heads up. Sadly I missed the edit window for the post.

Fixed link: http://afforestt.com/

ch··on Startup attempting to use drones to plant 36,000 trees a day
Interesting. This guy should look to collaborate with Afforestt, who have a working method to reforest an area in a reduced timescale: http://afforestt.com/index.html; might be a great outcome!
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