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trurl42

605 karma · joined May 10, 2013

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trurl42··on Show HN: Turn a paper's DOI into its full reference list (BibTeX/RIS, etc.)
Looks like it's just calling the crossref API
trurl42··on Show HN: XPipe, a shell connection hub for SSH, Docker, K8s, VMs, and more
Go and Rust are more suited than Java for building graphical user interfaces that run cross-platform? That would be news to me.

Sure it can be done, but it's not exactly like there are well-established solutions for this.

trurl42··on A sysadmin's rant about feed readers and crawlers (2022)
> Then where's my global setting to tell the browser what languages I speak, so it'd know what header to send?

In Chrome: chrome://settings/languages

In Firefox: https://support.mozilla.org/en-US/kb/choose-display-language...

trurl42··on On Running systemd-nspawn Containers (2022)
> Unfortunately, though, most developers don’t even know that there are options outside of Docker, or that they’re not as “convenient”.

> Hopefully, this article has disabused some of that notion.

If that was the goal, it seems terribly complicated when compared with podman.

trurl42··on Show HN: Latex.to – LaTeX to image converter running in the browser
Well, for one, KaTeX doesn't do "LaTeX" but a limited subset of the TeX equation syntax. As such, it can't handle more complicated macros or typesetting anything apart from equations.
trurl42··on Don't Publish with IEEE (2005)
Last-Modified: Mon, 21 Nov 2005 04:40:39 GMT
trurl42··on PHP Doesn't Suck Anymore
And with that you're completely wrong, since strings in JavaScript are UTF-16.

It just so happens that your example consists of two UTF-16 codepoints.

(Node.js' Buffer uses UTF-8 by default).

trurl42··on Show HN: Name That Nation
Keyboard accessibility could use some love.
trurl42··on Exploring Quantum Computing with JavaScript: A Beginner's Guide
This is not a very good explanation, nor is it useful for anything.

A single qubit is not useful for computation and the way it is written doesn't generalize to more than a single qubit. The code doesn't even really simulate a single qubit properly, since it doesn't use complex numbers.

What they call a "Rydberg gate" is not a gate at all.

Most of the text feels like it's written by an AI.

trurl42··on Explore the Dragon Realm: Build a C++ adventure game with a little help from AI
It was changed.

old: https://about.gitlab.com/images/blogimages/compassinfield.pn...

trurl42··on A word used only by Postgres developers
Likely a variant spelling of frammis; https://en.wiktionary.org/wiki/frammis
trurl42··on TeXMe Demo: Self-Rendering Markdown and MathJax Documents
I find it slightly misleading that this is named after TeX, when it actually doesn't do TeX, but only has support for equations.

But I've already complained about that [1] when you presented your last project.

[1]: https://news.ycombinator.com/item?id=28034124

trurl42··on Show HN: Mathematics Chalkboard with LaTeX and Markdown Support
I suppose it's since it doesn't really support LaTeX but instead uses MathJax to render equations.

TeX is a a turing-complete language, picking some random subset of LaTeX commands would feel pretty arbitrary to me. In comparison, supporting full markdown syntax is pretty easy.

trurl42··on Quantum holds the key to secure conference calls
Actual research behind the article: https://arxiv.org/abs/2002.01491

This protocol depends on multipartite entanglement, so it does seem quite far away from being practical for anything yet.

If quantum routers were a solved problem and we had a quantum internet (last I checked, we do not), for this we would also need some form of 'coherent multicast routing'.

trurl42··on Beginner’s guide to mechanical keyboards
Want to be able to replace your keyboard, or get another one for the office easily? Buy a Cherry G80-3000.

The G80-3000 comes without NKRO, a very bendable case and PCB-mounted rather than plate-mounted switches.

A Leopold (for example) is much more pleasant to use and not so exotic that it's impossible to obtain a replacement.

trurl42··on Quantum Leaps, Long Assumed to Be Instantaneous, Take Time
That would be 2.

What's done in such an experiment is that we initialize a quantum state in a particular state (that this is possible is not actually obvious, but let's assume it's true) and then we make a lot of repeated measurements after different amounts of times.

So we're not talking about a single system, but instead about statistics about a set of measurements with systems that have been set up in the same initial state. (Each system only being measured once after a certain time after it's being set up).

trurl42··on Quantum Leaps, Long Assumed to Be Instantaneous, Take Time
As a quantum physicist: This might be an interesting experiment, but as far as the theory goes, this is exactly what is to be expected from standard quantum mechanics.

Quantum leaps being instantaneous would be a (possibly common) misconception.

The leap in a quantum leap is describing the notion of a discrete jump in measurement outcomes.

trurl42··on Compressing and enhancing hand-written notes (2016)
This reminds me of my time in university, when I saved all my lecture notes as DjVu [1] files.

It's a great file format for space-efficient archiving of scans like that, with a bit of scripted preprocessing.

[1]: https://en.wikipedia.org/wiki/DjVu

trurl42··on Tectonic: a modernized, self-contained TeX/LaTeX engine
Or if you're already using vim anyway, you can use a plugin like vimtex (https://github.com/lervag/vimtex) which automates the compiling after saving the file.
trurl42··on Ask HN: How do you get notified about newest research papers in your field?
https://scirate.com/

Is something like that for papers on the arXiv.

trurl42··on Dragon Curve fractals in LaTeX
Without redundant code:

  \documentclass[border=3pt]{standalone}
  \usepackage{tikz}
  \usetikzlibrary{lindenmayersystems}
  \begin{document}
  \begin{tikzpicture}[line width=1pt, rounded corners=4pt,
          l-system={
              rule set={X -> X+YF+,Y->-FX-Y},
              axiom=FX, angle=90, order=11, step=10pt
          }
      ]
  \foreach \c/\r in {green/0, red/90, blue/180, orange/270}
      \draw[\c, rotate=\r] l-system;
  \end{tikzpicture}
  \end{document}
trurl42··on Dutch universities start their Elsevier boycott plan
There is https://scirate.com/

It's only really used by the quantum information community at this point, but you could try promoting it in yours.

trurl42··on Isso – Open Source Alternative to Disqus
I guess the point is to not store ip addresses.

Given the focus on allowing anonymous commenting [1] this seems to make sense.

[1]: http://posativ.org/isso/docs/#what-s-wrong-with-disqus

trurl42··on Filezilla at SourceForge is malware
WinSCP is a nice alternative.

http://winscp.net/

trurl42··on Notes on Quantum Mechanics
The page is unusable at lower resolutions.

http://i.snag.gy/O9Abg.jpg

It's pretty bad.

trurl42··on Julia: A fresh approach to numerical computing
It's great to have a paper like this on the arXiv, I believe this is the right way to reach the scientific community.

Some ideas for improvements:

The package directory could be mentioned more prominently.

It's a bit tricky to select code in the PDF, not sure if much can be done about this?

trurl42··on Windows 10 is the official name for Microsoft's next version of Windows
And Windows 10 will be 6.4.

It just doesn't make any sense.

trurl42··on DeLorean: Using Speculation to Enable Low-Latency Interaction for Cloud Gaming
I'm really confused by the Android bashing in the introduction of the article.

> platform compatibility headaches and per-platform performance tuning [35, 30, 24].

That seems a bit biased, doesn't it?

trurl42··on Libquantum – Simulation of quantum mechanics
You would find prime factors.

What else would you expect to happen?

trurl42··on TerraTech – Physics-based vehicle construction and combat
I think this one might be more interesting because of the focus on multiplayer (something that probably won't exist in Universim?).

But it's still nice to see the idea get picked up again. Spore had a great concept, but was executed poorly.

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