<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: deltasquared</title><link>https://news.ycombinator.com/user?id=deltasquared</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Sat, 01 Aug 2026 02:20:23 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=deltasquared" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by deltasquared in "Putting email in its place with Emacs and Mu4e"]]></title><description><![CDATA[
<p>Yes! Org-table is a spreadsheet. org-babel will run SQLite and gnuplot.</p>
]]></description><pubDate>Wed, 10 Dec 2025 12:41:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=46217055</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=46217055</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46217055</guid></item><item><title><![CDATA[New comment by deltasquared in "Org-social is a decentralized social network that runs on Org Mode"]]></title><description><![CDATA[
<p>This filtered out those who 
1) don’t use eMacs
2) don’t use org-mode<p>I suspect org-mode users are willing to go through an extra step if needed.<p>My notes are in .org if I want to share with someone else I export to .md and use the output</p>
]]></description><pubDate>Thu, 14 Aug 2025 12:48:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=44899766</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=44899766</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44899766</guid></item><item><title><![CDATA[New comment by deltasquared in "“Support for System V scripts now deprecated; will be removed in future release”"]]></title><description><![CDATA[
<p>People may not trust systemd because years ago there were some really bad defaults like <a href="https://github.com/systemd/systemd/issues/2402">https://github.com/systemd/systemd/issues/2402</a> that for instance mounted your firmware in read write mode by default.<p>That kind of thing leaves a bad taste in some peoples mouth. I am pretty sure some people have bricked hardware with systemd.</p>
]]></description><pubDate>Wed, 28 Jun 2023 23:58:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=36514465</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=36514465</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=36514465</guid></item><item><title><![CDATA[New comment by deltasquared in "Show HN: I may have created a new type of puzzle"]]></title><description><![CDATA[
<p>Thanks for your wonderful books. You have been an inspiration.</p>
]]></description><pubDate>Sun, 18 Sep 2022 14:07:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=32887683</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=32887683</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=32887683</guid></item><item><title><![CDATA[New comment by deltasquared in "Sampler for Mac Touchbars"]]></title><description><![CDATA[
<p>For Vim use, I map caps lock to esc. This is built into osX under settings -> keyboard -> Modifier Keys...</p>
]]></description><pubDate>Fri, 10 Jul 2020 14:51:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=23792034</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23792034</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23792034</guid></item><item><title><![CDATA[New comment by deltasquared in "The x86 Advanced Matrix Extension"]]></title><description><![CDATA[
<p>I am wondering why I would want this on a CPU when this kind of processing is already available on a GPU.</p>
]]></description><pubDate>Tue, 30 Jun 2020 13:41:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=23689874</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23689874</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23689874</guid></item><item><title><![CDATA[New comment by deltasquared in "Numerical Linear Algebra for Programmers"]]></title><description><![CDATA[
<p>It lost me at no C++ at all.</p>
]]></description><pubDate>Fri, 26 Jun 2020 13:44:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=23651875</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23651875</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23651875</guid></item><item><title><![CDATA[New comment by deltasquared in "Grassmann.jl A\b 3x faster than Julia's StaticArrays.jl"]]></title><description><![CDATA[
<p>I agree, the subtle difference between the physics and math mindset is interesting. I wound up on the sidelines as a computer scientist who worked in a physics lab.</p>
]]></description><pubDate>Wed, 17 Jun 2020 00:05:17 +0000</pubDate><link>https://news.ycombinator.com/item?id=23545947</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23545947</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23545947</guid></item><item><title><![CDATA[New comment by deltasquared in "Grassmann.jl A\b 3x faster than Julia's StaticArrays.jl"]]></title><description><![CDATA[
<p>I do have a bit of physics in my background. I read about Grassmann recently in a game programming book. Foundations of game engine development Volume 1 By Eric Lengyel ends with a nice explanation of Grassmann algebra.<p>The road to reality by Roger Penrose also has a treatment of Grassmann algebra in physics context.<p>I agree the library is likely a reference to the mathematician.</p>
]]></description><pubDate>Tue, 16 Jun 2020 02:16:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=23535336</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23535336</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23535336</guid></item><item><title><![CDATA[New comment by deltasquared in "Grassmann.jl A\b 3x faster than Julia's StaticArrays.jl"]]></title><description><![CDATA[
<p>This is a pretty neat trick, they implemented exterior algebra see <a href="https://en.wikipedia.org/wiki/Exterior_algebra" rel="nofollow">https://en.wikipedia.org/wiki/Exterior_algebra</a><p>You see this kind of math in textbooks focused on computer graphics.</p>
]]></description><pubDate>Mon, 15 Jun 2020 20:37:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=23532673</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=23532673</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23532673</guid></item><item><title><![CDATA[New comment by deltasquared in "Introducing Swift"]]></title><description><![CDATA[
<p>It does look a bit like Dylan. I wonder if it has more than a passing resemblance. Also I wonder if they are doing SBCL real time compelling.</p>
]]></description><pubDate>Mon, 02 Jun 2014 22:35:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=7836935</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=7836935</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=7836935</guid></item><item><title><![CDATA[New comment by deltasquared in "An autocompletion daemon for Go"]]></title><description><![CDATA[
<p>That project just made my day!</p>
]]></description><pubDate>Thu, 28 Mar 2013 08:04:38 +0000</pubDate><link>https://news.ycombinator.com/item?id=5453734</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5453734</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5453734</guid></item><item><title><![CDATA[New comment by deltasquared in "Amazing Dice: Rediscovering surprise"]]></title><description><![CDATA[
<p>Non transitive dice are really fun.<p>If you want a jumping off point, I wrote some simulations with this set of dice in python. The source [0] is on github.<p><a href="https://github.com/deltasquared/grime/blob/master/grime.py" rel="nofollow">https://github.com/deltasquared/grime/blob/master/grime.py</a></p>
]]></description><pubDate>Thu, 14 Mar 2013 20:33:25 +0000</pubDate><link>https://news.ycombinator.com/item?id=5377525</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5377525</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5377525</guid></item><item><title><![CDATA[New comment by deltasquared in "Decompiling C# (async/await)"]]></title><description><![CDATA[
<p>Surprisingly, you don't have to wait for Roslyn.<p>The technique exists now [0]. It is kind of a pain to use and seems kind of dangerous to use as a web app. But it is there. I messed with this a few years ago.<p>[0] <a href="http://stackoverflow.com/questions/3111190/compiling-net-code-in-net-4" rel="nofollow">http://stackoverflow.com/questions/3111190/compiling-net-cod...</a></p>
]]></description><pubDate>Fri, 08 Mar 2013 12:31:59 +0000</pubDate><link>https://news.ycombinator.com/item?id=5343051</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5343051</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5343051</guid></item><item><title><![CDATA[New comment by deltasquared in "Decompiling C# (async/await)"]]></title><description><![CDATA[
<p>It is neat that C# has some standard macros defined. It would be nicer if it was more explicit what is going on behind the scenes. I would love to see the equivalent of c-macro-expand. [0]<p>Also, although it is possible to extend C# using stuff like custom linq providers, [1] I still prefer lisp style macros.<p>[0] <a href="http://www.linuxjournal.com/article/2821" rel="nofollow">http://www.linuxjournal.com/article/2821</a>
[1] <a href="http://msdn.microsoft.com/en-us/library/bb546158.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/bb546158.aspx</a></p>
]]></description><pubDate>Fri, 08 Mar 2013 12:15:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=5343000</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5343000</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5343000</guid></item><item><title><![CDATA[New comment by deltasquared in "Google Announces $1,299 Chromebook Pixel With 2560×1700px Touchscreen"]]></title><description><![CDATA[
<p>And this is why I am always suspicious of an IDE. This sounds like a really nice way to talk to a Linode to develop on.</p>
]]></description><pubDate>Thu, 21 Feb 2013 23:10:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=5261259</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5261259</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5261259</guid></item><item><title><![CDATA[New comment by deltasquared in "Sorry, Geeks, Microsoft Excel is Everywhere"]]></title><description><![CDATA[
<p>I wonder if by geeks, the OP means "people who want to get the correct answer consistently."</p>
]]></description><pubDate>Thu, 14 Feb 2013 19:59:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=5221737</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5221737</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5221737</guid></item><item><title><![CDATA[New comment by deltasquared in "Five days with Pebble"]]></title><description><![CDATA[
<p>Well if you want to start with the previous product, the inPulse, they have an SDK here:
<a href="http://getinpulse.com/pulsesdk/" rel="nofollow">http://getinpulse.com/pulsesdk/</a><p>They have a simulator and some nice code samples. It is a fun C api and simulator. I am not sure when they will release the SDK for the Pebble.</p>
]]></description><pubDate>Thu, 14 Feb 2013 10:33:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=5218831</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5218831</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5218831</guid></item><item><title><![CDATA[New comment by deltasquared in "Critic Markup: Plain-Text Editing Markup for Humans"]]></title><description><![CDATA[
<p>Well if anyone wants an emacs mode for this:
(require 'generic-x) ;; we need this<p>(define-generic-mode
  'critic-mode
  nil
  nil
  '(("{--.<i>--}" . 'font-lock-warning-face)
    ("{~~.</i>~~}" . 'font-lock-constant-face)
    ("{{.<i>}}" . 'font-lock-keyword-face)
    ("{>>.</i><<}" . 'font-lock-function-name-face)
    ("{\+\+.*\+\+}" . 'font-lock-type-face)
  )
  nil
  nil
  "A mode for foo files"
)</p>
]]></description><pubDate>Tue, 12 Feb 2013 21:15:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=5209598</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5209598</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5209598</guid></item><item><title><![CDATA[New comment by deltasquared in "Critic Markup: Plain-Text Editing Markup for Humans"]]></title><description><![CDATA[
<p>Nice idea. It seems pretty easy to understand. Where is the emacs mode?</p>
]]></description><pubDate>Tue, 12 Feb 2013 15:23:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=5207323</link><dc:creator>deltasquared</dc:creator><comments>https://news.ycombinator.com/item?id=5207323</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5207323</guid></item></channel></rss>