14221
Rreverrse Debugging
rr is the debugger for Rust (et al.) that is is almost too good to be true.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 21,842 posts.
14222
14223
A good AGENTS.md is a model upgrade. A bad one is worse than no docs at all
We pulled dozens of AGENTS.md files from across our monorepo and measured their effect on code generation. The best ones gave our coding agent a quality jump…
14224
Short, friendly base32 slugs from timestamps
~4 lines of Go to produce succinct, stable, URL-friendly slugs from timestamps.
14225
The current state of TLA⁺ development
The 2025 TLA⁺ Community Event was held last week on May 4th at McMaster University in Hamilton, Ontario, Canada. It was a satellite event to ETAPS 2025, which I also attended, and plan to write about in the near future. I gave a talk somewhat-hucksterishly titled It’s never been easier to write TLA⁺ tooling! which I…
14226
Asm.js Speedups Everywhere
asm.js is an easy-to-optimize subset of JavaScript. It runs in all browsers without plugins, and is a good target for porting C/C++ codebases such as game engines - which have ...
14227
OpenBSD's Pledge and Unveil from Python
Years ago, OpenBSD gained two new security system calls, pledge(2) (originally tame(2) ) and unveil . In both, an application surrenders capabilities at run-time. The idea is to perform initialization like usual, then drop capabilities before handling untrusted input, limiting unwanted side effects. This feature is…
14228
Request Coalescing in Async Rust
As the popular saying goes, there are only two hard problems in computer science: caching, off-by-one errors, and getting a Rust job that isn’t cryptocurrency-related. Today, we’ll discuss caching!...
14229
Light Table a year ago
A year ago today I put up the original blog post for Light Table . It was just a simple video of a prototype I made in less than a week while I was visiting my grandparents without internet - at the time we had no idea what it would become. To be honest, I thought some would think it was neat, but then it would fade…
14230
Valgrind Release 3.9.0
Official Home Page for valgrind, a suite of tools for debugging and profiling. Automatically detect memory management and threading bugs, and perform detailed profiling. The current stable version is valgrind-3.28.0.
14231
LLVM’s garbage collection facilities and SBCL’s generational GC
Intro, overview
14232
14233
Dolphin Progress Report: August 2016
Dolphin started solely as a GameCube emulator, focused only on the one console. But, when the Wii was released and it was discovered to have hardware almost identical to its older sibling, Dolphin naturally evolved into a GameCube and Wii emulator. All of our readers are probably familiar with this....
14234
Parallelism in one line
A Better Model for Day to Day Threading Tasks
14235
Haskell vs. Erlang for bittorent clients
Haskell vs. Erlang Since I wrote a bittorrent client in both Erlang and Haskell, etorrent and combinatorrent respectively, I decided to put ...
14236
The AWS SDK for Go is now 1.0
Earlier this year, my colleague Peter Moon shared our plans to launch an AWS SDK for Go. As you will read in Peter’s guest post below, the SDK is now generally available! — Jeff; At AWS, we work hard to promote and serve the developer community around our products. This is one of the reasons […]
14237
Developing Multitile Creatures in Roguelikes
Describing technical and design issues associated with having creatures that occupy multiple cells in the grid-based world of a roguelike, with solutions.
14238
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…
14239
Seven Commandments for Event-Driven Architectures
The critical rules to keep in mind when designing an event-driven architecture
14240
Clojure Linear Algebra Refresher: 1 – Vector Spaces
This article is a starting article in a series that is going to briefly skim through a good engineering textbook on linear algebra, making notes that help yo...
14241
Things I learned writing my first technical book
A hundred things I learned writing my first technical book “Data-Oriented Programming”
14242
Rvest: Easy web scraping with R
Introducing rvest: scrape web data with CSS selectors or XPath, extract text/tables, and navigate sites with sessions.
14243
Trinity: PSP Emulator Escape
Trinity is a fully chained exploit for the PS Vita™ consisting of six unique vulnerabilities. It is based on a decade of knowledge and research. The source code of Trinity can be found here.
14244
Running Rust on Logic Gates
A journey in building an ARM CPU from scratch in a digital circuit simulator, and running Rust on it to interpret Scheme and serve Web pages.
14245
My Git Workflow
Lately I’ve been acting as the unofficial Git consultant for Skribit , usually in response to @Stammy saying something on Twitter along the lines of “Hey, git just did something totally nonintuitive and now I can’t figure out what to do next.” I’ve been using Git long enough to know the answer, usually, or at least to…
14246
A Primer on Proxies
A technical dive into traditional TCP proxying over HTTP
14247
String Diagrams for Linear Algebra
We have established that there is a homomorphism called θ from B, the PROP of diagrams, to Mat, the PROP of matrices. To do this, it was enough to say where θ takes the four stars of the story so f…
14248
Directly compiling Scheme to WebAssembly: lambdas, recursion, iteration
It's been just over three months since we announced the Guile on WebAssembly project (codenamed Hoot ). Since then we've brought on two fantastic hackers to develop the project and progress has been quick.
14249
A Grimoire of Functions
I'm the kind of person who reads encyclopedias front to back just for fun, and I've been fascinated by mathematical special functions at least since my first encounter with the gamma function as a teenager. My work implementing numerical and symbolic algorithms in mpmath , Arb and other software projects during the…
14250
Memory Allocators 101
For the last few weeks, I've been working on a couple of patches to tcmalloc, Google's super high performance memory allocator. I'm going to post about them soon, but first I thought it would be cool to give some background about what a memory allocator actually does. So, if you've ever wondered what happens when you…