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Claude Opus 4 and 4.1 can now end a rare subset of conversations
Claude Opus 4 and 4.1 can now end a rare subset of conversations. An update on our exploratory research on model welfare.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 3,470 posts.
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Code is not Literature
I have started code reading groups at the last two companies I’ve worked at, Etsy and Twitter, and some folks have asked for my advice about code reading and running code reading groups. Tl;dr: don’t start a code reading group. What you should start instead I’ll get to in a moment but first I need to explain how I…
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Files Are Fraught with Peril
This is a psuedo-transcript for a talk given at Deconstruct 2019. To make this accessible for people on slow connections as well as people using screen readers, the slides have been replaced by in-line text (the talk has ~120 slides; at an average of 20 kB per slide, that's 2.4 MB. If you think that's trivial…
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Rwasa – A high-performance web server in x86_64 assembly
rwasa is our full-featured, high performance, scalable web server designed to compete with the likes of nginx . It has been built from the ground-up with no external library dependencies entirely in x86_64 assembly language, and is the result of many years' experience with high volume web environments. In addition to…
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Zero-Bundle-Size React Server Components
This blog site has been archived. Go to react.dev/blog to see the recent posts. 2020 has been a long year. As it comes to an end we wanted to share a special Holiday Update on our research into zero-bundle-size React Server Components. To introduce React Server Components, we have prepared a talk and a demo. If you…
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Baby's First Garbage Collector
When I get stressed out and have too much to do, I have this paradoxical reaction where I escape from that by coming up with another thing to do. Usually it’s a tiny self-contained program that I can write and finish.
488
Swift Achieved Dynamic Linking Where Rust Couldn't (2019)
For those who don’t follow Swift’s development, ABI stability has been one of its most ambitious projects and possibly it’s defining feature, and it finally shipped in Swift 5 . The result is something I find endlessly fascinating, because I think Swift has pushed the notion of ABI stability farther than any language…
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From Chrome Apps to the Web
Note: The timeline has been updated. Please see our October 2021 post for more details. We have always believed in making the open, inter...
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The Bipolar Lisp Programmer (2007)
You're only given a little spark of madness. You mustn't lose it. Robin Williams
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SBCL: the ultimate assembly code breadboard (2014)
Paul Khuong's personal blog. Some Lisp, some optimisation, mathematical or computer.
494
Clojure: Transducers
Transducers are composable algorithmic transformations. They are independent from the context of their input and output sources and specify only the essence of the transformation in terms of an individual element. Because transducers are decoupled from input or output sources, they can be used in many different…
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Quirks, Caveats, and Gotchas in SQLite
The SQL language is a "standard". Even so, no two SQL database engines work exactly alike. Every SQL implementation has its own peculiarities and oddities, and SQLite is no exception to this rule.
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The Next Big Language
Dylan? C# 3? Perl 6? Does it have deterministic destructors, even as blocks like Python 2.5? Generics? A powerful macro system? Even as described it sounds like magic, but not a moment too soon.
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Monads are like burritos (2009)
From the highly eclectic blog of Mark Dominus
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The byte order fallacy
Whenever I see code that asks what the native byte order is, it's almost certain the code is either wrong or misguided. And if the native b...
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Quake's Fast Inverse Square Root
I'm no graphics expert, but appreciate why square roots are useful. The Pythagorean theorem computes distance between points, and dividing by distance helps…
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Python Extension Proposal 498: Literal String Formatting
Python supports multiple ways to format text strings. These include %-formatting 1, str.format() 2, and string.Template 3. Each of these methods have their advantages, but in addition have disadvantages that make them cumbersome to use in practice. This...
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Go Data Structures: Interfaces (2009)
Go's interfaces—static, checked at compile time, dynamic when asked for—are, for me, the most exciting part of Go from a language design point of view. If I could export one feature of Go into other languages, it would be interfaces.
503
Untangling Lifetimes: The Arena Allocator
Making performant dynamic manual memory management in C feel almost like garbage collection.
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The Art of Unix Programming (2003)
This book and its on-line version are distributed under the terms of the Creative Commons Attribution-NoDerivs 1.0 license, with the additional proviso that the right to publish it on paper for sale or other for-profit use is reserved to Pearson Education, Inc. A reference copy of this license may be found at…
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Cdb: a fast, reliable, simple package for creating, reading constant databases
Packages that need to read cdb files should incorporate the necessary portions of the cdb library rather than relying on an external cdb library.
506
Strings, bytes, runes and characters in Go
How strings work in Go, and how to use them.
507
Maze-generation algorithms, with JS demos
Algorithms, circle mazes, hex grids, masking, weaving, braiding, 3D and 4D grids, spheres, and more!
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Differential Synchronization (2009)
Keeping two or more copies of the same document synchronized with each other in real-time is a complex challenge. This paper describes the differential synchronization algorithm. Differential synchronization offers scalability, fault-tolerance, and responsive collaborative editing across an unreliable network.
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The Magpie Developer
I’ve often thought that software developers were akin to Magpies, birds notorious for stealing shiny items to decorate their complex nests. Like Magpies, software developers are unusually smart and curious creatures, almost by definition. But we are too easily distracted by shiny new toys and playthings. I no longer
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Domain Driven Design
Slides and video from my talk "Domain Modeling Made Functional with the F# Type System"