451
Software for One
Robin Sloan wished for a HyperCard that could build a family app in a day. That world showed up.
New
The latest blog posts to take off on Hacker News. 1,421 posts.
452
The mean means nothing: data visualization to debug a latency problem
I was recently trying to validate some performance improvements related to lld at $DAYJOB and it was a little frustrating to see the improvements in our benchmarks but not in the live-production dashboards.
453
MCP 2026-07-28 Specification: transport going stateless
The 2026-07-28 Model Context Protocol specification is out, bringing a stateless protocol core, Multi Round-Trip Requests, header-based routing, cacheable list results, authorization hardening, a formal extensions framework, and updated Tier 1 SDKs.
454
A walk through of the DeltaNet family of linear attention variants
Guide to the DeltaNet Family of linear attention mechanisms.
455
How Do I Profile eBPF Code?
If we are running any eBPF workload or writing eBPF code, we want to measure its performance impact, and in this post we will demonstrate an example of how to do it. In this example, our goal is to measure the performance of file open operations, one of the most critical functions in the OS. Our code used file open…
456
Kimi K3 Architecture Overview and Notes
Short architecture note on Kimi K3, including LatentMoE, Kimi Delta Attention, Attention Residuals, NoPE, multimodality, and inference-efficiency choices.
457
Zig's Incremental Compilation Internals
As a member of the Zig core team, one of the most impactful projects I’ve been involved with is the implementation of incremental compilation into the Zig compiler. This feature allows the compiler to detect which individual functions and declarations have changed since a project was last built, recompile only that…
458
How JPEG works: Interactively explore JPEG's lossy compression methods
In the world of technology, “forever” means about 5 years. It’s humbling to think that the 1992 JPEG image standard is still going strong despite being more than 5 “forevers” old. Why has it been so successful? This article presents the key ideas behind JPEG in plain language and includes an interactive JPEG…
459
How is the Bun rewrite in Rust going?
I think it’s important to be very Canny when someone makes a claim that supports a company’s large valuation.
460
Removing React.js from the codebase and adapting Htmx for UI interactivity (2023)
Started by rafalp on Dec. 12, 2023 in the Roadmap category. 6 replies, last one from July 25, 2024.
461
Teaching Kids Forth
Forth is uncommonly used to teach programming to kids. Scripting languages like Python and visual environments like Scratch are far more popular options. But when I got the opportunity to introduce middle and high school students to programming, I chose the stack-oriented concatenative language from 1970. I was…
462
We have proof automation now
I've long had a soft spot for dependently-typed languages like Coq Rocq and Lean. They offer the possibility of a type system capable of encoding and enforcing arbitrarily subtle invariants. The sort of thing that, in regular languages, ends up (at best) as a comment, and which quickly gets lost as the size of the…
463
Lisp moving Forth moving Lisp
This chapter is a culmination of many macro techniques we have looked at so far in this book. Using macro abstractions we have developed, we create an implementation of one of my favourite programming languages: forth . Although this implementation embodies most of the important ideas of forth, it is very different…
464
Ruff v0.16.0 – Significant new updates – 413 default rules up from 59
The next stable version of Ruff is out now.
465
Git rebase -i is not that scary
a guide to interactive rebasing.
466
The new rules of context engineering for Claude 5 generation models
We removed over 80% of Claude Code's system prompt for more advanced models. How to apply the lessons we learned to your own context engineering in Claude Code and with your own agents.
467
Memory safety absolutists
When seeing the title of this post, I bet in some people's minds, the first thought was "Rust devs!". This connection is not unfounded. Rust devs tend to be passionate about memory safety. Some of it, I'm sure, may have been caused by a classic language wars attitude: my language is better than yours, and here is why…
468
2x, not 10x: coding with LLMs in 2026
Calibrate your enthusiasm
469
A shell colon does nothing. Use it anyway
I've written more shell scripts than I can count, but I still stumble upon tricks that honestly blow my mind far too often than I care to admit. Latest thing that blew my head clean off? The shell colon.
470
Watching Go's new garbage collector move through the heap
Go 1.26 made Green Tea the default GC. We observe its cache-friendliness with perf, visualize the heap to see how Go allocates, and poke at a sparse-page problem a non-moving collector like Go's struggles with.
471
Stinkpot: SQLite-backed shell history
sqlite-backed shell history
472
I Tried Building a Real App with AI. It Took a Year
My wife and I have been looking for an app to track things like habits, hobbies, and when we last did certain chores.To be honest there are probably hundreds of different habit trackers on the App Store. Next to todo list apps they are supposed to be the easiest apps to create so it is not really that surprising there…
473
If coding has been solved, why does software keep getting worse?
As I’m writing this, we’re in the middle of an AI-induced mass psychosis. People are literally token-maxxing themselves into hospital beds, scrambling to capture some of that market value before everything is automated away. I can’t blame them. Models keep getting better, programmers are being laid off left and right…
474
JEP 540: Simple JSON API (Now in Incubator)
Define a simple, standard API for parsing and generating JSON documents so that doing so does not require an external library. Enable many JSON processing tasks to be accomplished with little coding. This is an incubating API .
475
I learned PCB design, 3D printing and C just to listen to music
I always liked to see and touch the cover artwork of the CDs and LPs I bought in the past, but in the end the convenience of digital streaming won me over and I accepted no (or stamp-sized) artwork. Lately I’ve been missing this more and more and ultimately decided to try to do something about it. So I built a…
476
Software rendering in 500 lines of bare C++
In this series of articles, I aim to demonstrate how OpenGL, Vulkan, Metal, and DirectX work by writing a simplified clone from scratch. Surprisingly, many people struggle with the initial hurdle of learning a 3D graphics API. To help with this, I have prepared a short series of lectures, after which my students are…
477
Emacs Is a Lispboard
What would have happened if Emacs' default buffer had been a terminal emulator? Conceptually, from the outside, it would be perceived as a terminal…
478
Malleable computing, Emacs, and you
It all started with a routine task. I use GitHub issues for all of my public-facing projects but my preference is keeping track of things in Org Agenda. To reconcile the two, I would manually...
479
SIMD for Collision
In a previous post SIMD Matters I discussed the big wins I got from graph coloring to make the contact solver faster. That same approach exists in Box3D. I like to call this approach “wide SIMD”. The idea is to process multiple work units at the same time. In the contact solver this means solving four contact points…
480
Jacobian Conjecture for Baby
An illustrated guide that starts from the basics, explains the Jacobian Conjecture, and follows what happened to it in July 2026.