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John MacFarlane
GitHub
texmath — A Haskell library for converting LaTeX math to MathML.
quadratic converting haskell
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least often elsewhere. Posts are matched on those words alone —
nothing here is a summary of this one.
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19 September
Philosophy professor at UC Berkeley and creator of pandoc, the universal document converter, and of the CommonMark markdown specification.
18 September
Philosophy professor at UC Berkeley and creator of pandoc, the universal document converter, and of the CommonMark markdown specification.
13 September
Philosophy professor at UC Berkeley and creator of pandoc, the universal document converter, and of the CommonMark markdown specification.
5 September
Mathematician at UCLA, working mainly in harmonic analysis and partial differential equations. Writes What's new, a long-running blog on their research, open problems and expository notes.
An elaboration of the previous post mentioning the bounded gaps between primes problem as an illustration of the opportunity cost of converting a fruitful problem such as this solely into a competitive benchmark. [Indeed, as I point out below, this already came close to happening back in 2013.] As with most other problems worth studying in pure mathematics, the particular bound one gets on these gaps is not of much intrinsic importance. Improving Zhang's bound of 70 million, to 246, 188, or 6 would not, in itself, have significant impact on any other mathematical problem, let alone any real-w… benchmarks Related
3 September
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
22 August
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
Java’s String.indexOf can be slow (quadratic) In Java, you find the location of a substring using indexOf. String haystack = "The quick brown fox jumps over the lazy dog"; String needle = "fox"; int index = haystack.indexOf(needle); Naively, you might implement ind…
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21 August
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
15 May
Statistician and software engineer who writes R packages for reproducible research and publishing, including knitr, bookdown and blogdown.
Converting testthat Tests to testit Back in 2013, I wrote about testing R packages when I first released testit. Thirteen years later, I still believe that unit testing should be nothing more than “tell me if something unexpected happened.” Re…
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13 October 2025
Freelance research analyst and writer of the blog Aceso Under Glass, known for 'epistemic spot checks' of non-fiction claims.
energy
Their words
In general your body would rather use glycogen than fat, because glycogen loses almost no energy in the conversion from and to sugar and fat loses a lot.
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acesounderglass.com
5 October 2025
American senior staff engineer working on developer and user experience and open source; writes at adamdehaven.com.
Nothing as humbling as using the gym at a hotel in Europe and converting pounds to kilograms 😅 Doesn’t help I’ve been traveling for almost 4 weeks straight Budapest // Colorado // Spain Europe Related
16 March 2025
Founder of the toy manufacturer Viahart; writes about manufacturing, importing and why bringing production back to America is harder than it sounds.
6 November 2024
Interface designer and researcher, known for the talks Inventing on Principle and Media for Thinking the Unthinkable and for essays on dynamic representations of ideas. Founder of Dynamicland, where he is building a communal computer.
Their words
The programming language for the 21st century.
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worrydream.com
7 August 2024
American software engineer; worked on code-server at Coder and teaches TypeScript and open-source contribution. Publishes at joeprevite.com.
7 September 2022
Biochemist at University College London; writes about the origin of life and the role of energy in evolution, in The Vital Question and Transformer.
Their words
So, how did they do that? You may as well say that a miracle happened. I don’t believe in soup. I think what we have in a vent is a continuous conversion, a continuous growth, a continuous reaction, a continuous converting a flow of molecules into more of yourself, you might say, even if it’s a small bit.
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5 January 2014
Pseudonymous essayist. Writes at gwern.net on AI scaling, statistics, genetics and long-running internet research, with heavy citation and a habit of revising old essays in place rather than leaving them wrong.
Nothing matches. Show everything
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
statements, and a person can change their mind, which is recorded too.
Got it
About the English under a post
Some people here publish in a language other than English. Where they
do, this site shows a machine translation beneath the post, in
this typeface — the site's own, not theirs.
The post itself is never changed, moved or hidden: what is set in the
serif above is exactly what the person published, and it is what to
quote them on. A translation can be wrong in ways that matter,
especially about tone.
Only the post's own words are translated. A quoted post, a linked
article and a belief on korrents.com
are left in their original language.
Got it