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A new faster algorithm to compute 64-bit signed floor division
The missing chapter of Hacker's Delight
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,414 posts.
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Frame – Linux X server in Assembly
Philosophy - Sciences - Geekery - Art - Life - Coaching - Fun < Simplify Everything
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Smalltalk's Browser: Unbeatable, yet Not Enough
The four-pane System Browser has shaped Smalltalk development for forty years. It’s still brilliant at providing context. But the real problem may not be the browser itself—it may be the lack of composition between the tools that surround it.
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Superlite: A Faster Alternatie to Superpowers
Why I built superlite, an autonomous build workflow for Claude Code that doesn't ask permission every four minutes: how it works, how to use it, and the benchmarks.
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Emacs, how it all started for me
A presentation of why, and how, I started using Emacs
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A single function Jev-like wrapper for LLMs, including vision models
I was intrigued by Jev and the self-hostable projects appearing around it, such as OpenJev and SemIf . Reading about them introduced me ...
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From 300KB to 69KB per Token: How LLM Architectures Solve the KV Cache Problem
How the KV cache gives every AI conversation a physical weight in silicon, and what happens when the memory runs out.
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Markdown in /src
In this essay, Carson Gross argues that Markdown is now an important source artifact for software systems built with LLMs, and that, following the principle of locality, it should live in /src, alongside the code it produces.
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Highlights from Git 2.54
The open source Git project just released Git 2.54. Here is GitHub’s look at some of the most interesting features and changes introduced since last time.
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Datasette Apps: Host custom HTML applications inside Datasette
Today we launched a new plugin for Datasette, datasette-apps, with this launch announcement post on the Datasette project blog. That post has the what, but I’m going to expand on …
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Xanadu was waiting for agents
From the Zed Blog: Ted Nelson specified the docuverse sixty years ago. The technology finally arrived, and so did its native users.
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The back cover of C++: The Language raises questions not answered by front cover
Not doing the reading.
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Building a real-time AI tutor for 5-year-olds
We set out to build the first AI tutor to teach math and reading to kids ages 4-9. For AI to actually teach a five-year-old, pedagogy must be baked into the engineering. A child can't wait for a slow reply, can't read a chat interface, and can't unhear anything a model gets wrong. We wanted to share some of the…
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Why Target Common Lisp for Code Generation?
A blog about computers, functional languages, Lisp, and Scheme.
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Systems that no one will test
(this post figured on HNews here) This happened to me in 2020, and it has been on my mind again lately. During the worst of the pandemic, I found a vulnerability in a system that gave me access to the Brazilian federal system, and with that access I was able to retrieve information on any
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I rewrote PostHog's SQL parser, 70x faster, while barely looking at the code
After the success of using agents to improve query performance through autoresearch , I wanted to try something more ambitious. I rewrote PostHog's…
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The Code-Only Agent
When code execution really is all you need. Exploring what happens when an AI agent can only write and run code.
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GC and Exceptions in Wasmtime
The Wasm GC and exceptions proposals are both enabled by default in today’sWasmtime 47 release! We are excited to help bring more languages to WebAssemblyand everywhere that Wasmtime runs. Getting to this point involved large Wasmtimecha...
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Tips for more effective fuzz testing with AFL++
Fuzz testing is incredibly effective for mechanically discovering software defects, yet remains underused and neglected. Pick any program that must gracefully accept complex input, written in any language , which has not yet been been fuzzed, and fuzz testing usually reveals at least one bug. At least one program…
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No more JetBrains products for me
The personal website of Matthew Kosarek
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Tar Files Created on macOS Display Errors When Extracting on Linux (2024)
tar.gz files seem to include extra files starting with ._. When these are extracted on Linux, a bunch of errors are displayed.
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Replacing Pull Requests with Delta
From the Zed Blog: Delta is now in public beta. Replacing pull requests is our first step toward replacing GitHub.
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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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Cord: Coordinating Trees of AI Agents
AI agents are good at doing one thing at a time. Give Claude a focused task and it performs. But real work isn’t one task. It’s a tree of tasks with dependencies, parallelism, and context that needs to flow between them.
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I ran Photoshop on a £0.60 computer chip
I've always had a fascination with simpler and low power computing. This lead me to run Photoshop on a 60 pence computer chip and it amazes me that this is possible.
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Synthesis is harder than analysis
Over the years, mathematicians, logicians and computer scientists have developed various calculi. If you have a background in computer science, you’ve likely heard of the lambda calculus, a m…
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Sourcehut account takeover via build logs (XSS in ansi2html)
A wormable vulnerability allowed anyone able to inject text in a build log on builds.sr.ht (or other instances) to take over accounts who viewed them