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Redesigning source control at Anthropic
As our merges per day grew more than tenfold, source control became our biggest development bottleneck. Here, we share how we migrated to an in-house version control system in five months.
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The latest blog posts to take off on Hacker News. 21,810 posts.
92
Two-Stack Sliding-Window Aggregation
An aggregation is some kind of summary of a set of data. This can be the sum, length, minimum, etc. It is quite common to want to calculate such a summary repeatedly, e.g. “the maximum noise level in dB for the past 30 seconds” for a nuisance detector. In such a case we say there is a sliding window over our data, and…
93
Your C is not standard C
this is an incomplete list of some incompatibilities between c as it's written in the standard and c as it exists in the real world for people who use gcc/clang + glibc/musl.
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LittleJS is 2D and 3D now
LittleJS just got the biggest update since it launched! It is still the small, fast, dependency-free HTML5 game engine it always was. Now it also has a full 3D renderer sharing the canvas with your…
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Who is vfmaddrnd231pd?
vfmaddrnd231pd is a unique instruction from the FMA instruction set. Most instructions in that set have mnemonics like vfmadd231pd, but here rnd means something very specific. The Intel Software Development Manual documents it as: VFMADDRND231PD – Fused Multiply-Add of Packed Double-Precision Floating-Point Values…
96
Writing a Demoscene Intro for the ZX Spectrum
In the late 80s, I spent an embarrassing number of hours hunched over my ZX Spectrum, typing in Sinclair BASIC programs and rudimentary assembler routines copied from magazines, trying to re-create the Amiga crack intros I’d seen round at a friend’s house. Obviously, they never came even slightly close - but now, many…
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Muse Wonder
Muse Wonder is Meta's frontier AI model that keeps track of what matters to you with Active Memory & Active Focus to work towards your goals at work & life.
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A Modern Web App in C
A modern web app written in c and served the old way: CGI, SQLite and a single binary. No frameworks, no containers and no regrets.
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Fable Took My Job
Fable is cool yo, it takes jobs yo, - Dario "steve" Altman
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How I reverse engineered a commercial spatial audio effect
Measuring a commercial spatial audio processor, extracting its stereo impulse responses, and rebuilding the effect as a convolution filter on Linux.
101
I'm sorry, but you still have to think
DHH, the creator of the Ruby on Rails framework, decided to rewrite Campfire Once from Ruby on Rails to Rust. Or rather ask a clanker to do it for him, as he can't stand reading or writing the Rust code himself. After that he added rewrites in other languages , like Elixir and Go.
102
The tilde in your PATH may not be your HOME
I was playing with the nono agent sandboxing tool and it greeted me with a warning: PATH entries the sandbox can write to: ~/.local/bin/ which looked suspicious.
103
Valen's Memory Safety: A New Kind of Borrow Checking
You all know me, I love exploring new memory safety approaches and blending them together in weird ways.
104
I paid people to try and follow my README
Developers suck at writing documentation. We like to say RTFM but often there ain't no FM to R. At best we have a half-arsed collection of notes, some obsolete tips, and a link to a desolate forum full of people asking the same questions again and again. That's no way to treat our users. I naïvely believe there's a…
105
Five months treating bugs like patients and coding agents like a medical team
How Cockroach Labs built MOLT Sinai, an AI coding “teaching hospital” that shipped IBM Db2 migration support in under two days.
106
Python 3.15
The official home of the Python Programming Language
107
Why are coding agents so dumb?
Models are getting better and better, while the agents that drive them languish.
108
Cloudflare acquires Deno
Putting ourselves in the best place to build the future of the web
109
Nix wrote half of my debugger
A few days ago I wrote about Rewind VM, a deterministic VM where every run of a Nix build is a pure function of its inputs, thread schedule included! I have been using it to find, reproduce and solve numerous race conditions in Nix builds, but it’s been making me feel a little crazy. What is this superpower, and why…
110
Bevy 0.20
Thanks to 227 contributors, 817 pull requests, community reviewers, and our generous donors, we're happy to announce the Bevy 0.20 release on crates.i…
111
C for Rust programmers
Interesting and unexpected details for Rust programmers learning the C programming language.
112
Yes, and
In this essay, Carson Gross discusses his advice to young people interested in computer science worried about the future given the advancements in AI.
113
Margaret Hamilton has died
Margaret H. Hamilton, a profoundly influential computer scientist best known for leading the software engineering team at MIT’s Instrumentation Lab during NASA’s Apollo program, died at age 90.
114
Push ifs up and fors down: The idiom, its algebra, and its limits
Tiger Style and matklad recommend pushing ifs up and fors down. This post looks at what the idiom actually says, where it shows up in query optimization and in the algebra of functional programs, and where the analogy stops paying for itself.
115
Anti-patterns in software blogging
Effective writing for software developers
116
A Terminal Protocol for Program Status (OSC 7501)
I wrote a specification for a new terminal escape sequence: OSC 7501, the Program Status Protocol . It lets any program tell the terminal what it's doing: idle, working, waiting on the user, finished, or failed, and why.
117
Decisions API is in public beta
Use the Decisions API to check conditions, select from fixed options, and score text, images, and JSON against a rubric.
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The Slow Formation of Durable Software
How a group of historians took years to imagine Zotero, the research application that would eventually be used by millions
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The Early History of Smalltalk (1993)
Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the ACM copyright notice and the title of the publication and its date appear, and notice is given that copying is by permission of the Association for Computing…