Hacker News Reader

lelfon A Specialized B-Tree for Concurrent Datalog Evaluation

Also: More Scalable Ordered Set for ETS Using Adaptation http://winsh.me/papers/erlang_workshop_2014.pdf This is how Erlang Term Storage (ETS) works in newer Erlang/OTP.

lelfon Matrix.org hacked

ctrl-meta-y (readline’s yank-nth-arg) pulls any argument.

lelfon Matrix.org hacked

Of course you can. It’s «ESC .» or «^[.»

Or you can check “Profiles → Keyboard → Use Option as Meta” for Terminal.app [or just press ⌥⌘O]. And then use option as meta.

lelfon Matrix.org hacked

I just use M-. (meta+.⃣) for that (aka M-_ aka readline’s yank-last-arg)

lelfon Matrix.org hacked

Another gem:

RRREEEEEEEE> I noticed you missed a doctype in your html page. In order for web browsers to know what type of html to render you should include a doctype. Thanks!

matrixnotorg> @RRREEEEEEEE Thank you, I will consider that for the next release

Edit: it got deleted

lelfon Breakthrough discovery in astronomy press conference [video]

The image https://www.nsf.gov/news/special_reports/blackholes/download...

lelfon Event Horizon Telescope Live Press Conference

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

lelfon Sweden will vote against the copyright deal/article 13

https://translate.google.com/translate?sl=auto&tl=en&u=https...

Sweden wants to change its vote on “Article 13” — here are the ways it can trap the directive

lelfon It seems that Google is forgetting the old web

> Which brings us to the elephant in the room: what are Google's motives behind this (clearly intentional) change?

They are maximising ad revenue, not the search relevance/usefulness.

lelfon Banish missing glyphs with Unifont

Not to mention that many emoji are emoji sequences. So again, not a 1:1.

lelfon Banish missing glyphs with Unifont

See also: https://github.com/rolandwalker/unicode-fonts (a different direction, starts from removing Unifont)

lelfon Warp – Mobile VPN

It does I think

  - Certificate[1] info:
   - subject `CN=Google Internet Authority G3,O=Google Trust Services,C=US', issuer `CN=GlobalSign,O=GlobalSign,OU=GlobalSign Root CA - R2', serial 0x01e3a9301cfc7206383f9a531d, RSA key 2048 bits, signed using RSA-SHA256, activated `2017-06-15 00:00:42 UTC', expires `2021-12-15 00:00:42 UTC', pin-sha256="f8NnEFZxQ4ExFOhSN7EiFWtiudZQVD2oY60uauV/n78="
  - Status: The certificate is trusted.

lelfon Warp – Mobile VPN

dns.google 8888.google 8.8.8.8 8.8.4.4

lelfon Warp – Mobile VPN

https://one.one.one.one

https://1.1.1.1

lelfon Researchers trick Tesla autopilot into driving into opposing traffic

Its title is too boring ;) https://news.ycombinator.com/item?id=19531025

lelfon Researchers trick Tesla autopilot into driving into opposing traffic

The actual post https://keenlab.tencent.com/en/2019/03/29/Tencent-Keen-Secur...

lelfon JavaScript Coercions Grid

Yep, it is +0 under default rounding direction. But +0 == -0 anyway.

lelfon People who run BSD

In case you ever run it from the battery, how is the power consumption?

lelfon Librefox: Firefox with privacy enhancements

See also: GNU IceCat https://www.gnu.org/software/gnuzilla/

lelfon OCaml on Baremetal Shakti RISC-V Processor

> any big non language projects written in OCaml

Coq proof assistant (https://coq.inria.fr). Well, you can say it is language-related, but it’s a lot more than that.

lelfon An amphibian fungus has become “the most deadly pathogen known”

Paper (pdf) — http://science.sciencemag.org/content/sci/363/6434/1459.full...

lelfon Storing UTC is not a silver bullet

And get the same problems, plus the new one, leap seconds (timestamps ignore them).

lelfon Arthur Whitney's 'B' Language

Just download it ‘manually’ https://anaconda.org/shaktidb/shakti/files and tar -xf

bin/k is 185K

lelfon How to increase serotonin in the human brain without drugs (2007)

pdf — https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2077351/pdf/200...

lelfon Dell Autism Hiring Program

Example?

lelfon Calculating the mean of a list of numbers (2016)

How about…

using known stable numeric methods? Kahan-Babuška summation?

lelfon Operable Erlang and Elixir [video]

Great presentation. I highly recommend to watch it, even you don't use Erlang/Elixir, it's for the most part is not Erlang-specific.

lelfon Ask HN: What happened to server-side rendering?

Phoenix.LiveView — you can't ignore it, the coolest thing happening right now about server-side rendering.

Demo: https://youtu.be/Z2DU0qLfPIY?t=2628

Links: https://leveljournal.com/why-phoenix-liveview-is-a-big-deal https://elixirforum.com/t/phoenix-liveview-info/16569

PS please stop calling it isomorphic — this is disgrace for the mathematics.

lelfon LHCb discovers matter-antimatter asymmetry in charm quarks

In summary, this Letter reports the first observation of a nonzero CP asymmetry in charm decays, using large samples of D⁰ → K⁻K⁺ and D⁰ → π⁻π⁺ decays collected with the LHCb detector. The result is consistent with, although at the upper end of, SM expectations, which lie in the range 10⁻⁴–10⁻³ [8–13]. Beyond the SM, the rate of CP violation could be enhanced. Unfortunately, present theoretical understanding does not allow very precise predictions to be made, due to the presence of strong-interaction effects which are difficult to compute. In the next decade, further measurements with charmed particles, along with possible theoretical improvements, will help clarify the physics picture, and establish whether this result is consistent with the SM or indicates the presence of new dynamics in the up-quark sector.

from the paper (links in my other comment). SM = standard model.

lelfon LHCb discovers matter-antimatter asymmetry in charm quarks

Live seminar https://webcast.web.cern.ch/event/i807176

Paper https://cds.cern.ch/record/2668357/files/LHCb-PAPER-2019-006...