691
Cloning a Sennheiser BA2015 battery pack
I generally avoid messing with Li-ion battery packs, but these are both Ni-mh and expensive.
New
The latest blog posts to take off on Hacker News. 1,421 posts.
692
Running Python code in a sandbox with MicroPython and WASM
I’ve been experimenting with different approaches to running code in a sandbox for several years now, but my latest attempt feels like it might finally have all of the characteristics …
693
OpenCV 5 Is Here: The Biggest Leap in Years for Computer Vision
OpenCV 5 is here! A massive modernization brings a graph-based DNN engine, over 80% ONNX coverage, hardware acceleration, LLM/VLM support, and a faster Python-first core. Learn why this isn't just an incremental update.
694
The back cover of C++: The Language raises questions not answered by front cover
Not doing the reading.
695
The perils of UUID primary keys in SQLite
A blog mostly about Clojure programming
696
Harness engineering: Leveraging Codex in an agent-first world
By Ryan Lopopolo, Member of the Technical Staff
697
Symbolica 2.0: Programmable Symbols for Python and Rust
Technical articles and release notes about Symbolica, symbolic computation, numerical methods, and high-performance computer algebra.
698
Gemma 4 QAT models: Optimizing compression for mobile and laptop efficiency
We’re releasing Gemma 4 quantization-aware training checkpoints, reducing memory requirements and improving on-device performance.
699
Conventional Commits encourages focus on the wrong things
You’ve almost certainly encountered Conventional Commits before. It may have reared its ugly head in the changelog of an open source project you’ve used. It may have been the enforced commit format for an open source project you contributed to. A lot of people swear by it. I swear at it. Even though it is used by a…
700
Playing with Vision Embeddings
Poking at the geometry of an image model's feature space.
701
Did Claude increase bugs in rsync?
In order to avoid accuastions of this "just being Claude defending Claude," "AI slop," "probably all hallucinations," etc., I've decided it's probably worth explaining a few key points about how this report was created:
702
Programmers will document for Claude, but not for each other
From the highly eclectic blog of Mark Dominus
703
Changing how we develop Ladybird
Ladybird is changing how code enters the project as we prepare to ship a browser to real users.
704
IPv6 zones in URLs are a mistake
Run away while you still can, it's not too late for you to avoid the curse of knowledge.
705
"Maybe later" was a feature
The most valueble code in my repo, is the code I didn't write.
706
OCaml Onboarding: Introduction to the Dune build system
Welcome to all Camleers We are back with another practical walkthrough for the newcomers of the OCaml ecosystem. We understand from the feedback we have gathered over the years that getting started with the OCaml Distribution can sometimes be perceived as challenging at first. That's why we keep it ...
707
My Agent Skill for Test-Driven Development
AI agents tend to be, at least as of this writing (May 2026), lousy at writing tests. The tests they write are often vague, cryptic, overcomplicated, hacky, dis...
708
709
Journey to JPEG XL: open-source experiments shaped the future of image coding
Explore how a decade of open source experiments in psychovisual modeling and compression led to JPEG XL, the future of image coding.
710
My Software North Star
Loris Cro's Blog
711
How LLMs work
A from-the-ground-up walkthrough of how modern LLMs work, from tokens to transformer blocks to the next-token loop
712
Elixir v1.20: Now a gradually typed language
From Elixir v1.20, every program is now gradually type checked in search for verified bugs and typing violations.
713
Angular v22
Today, we are thrilled to announce the release of Angular v22. We continue to be proud of the work we do with each release. Our goal is to…
714
Every Byte Matters
I have spent a large portion of my career working in Java. In that time, you get used to huge classes. New functionality? Just add a new method and field to the class. The cost of each new field is rarely considered. Performance is often considered from a classic computer science perspective by considering asymptotic…
715
Redis 8.8: New array data structure, rate limiter, performance improvements
Redis 8.8 is now available in Open Source. Explore the new array data type, window counter rate limiter, streams NACK, and more performance-focused updates.
716
It is an amazing time for programmers
Many legends of software development, like John Carmack or Chris Lattner, are very approachable. Check out their projects and go talk to them!
717
databow: a Rust CLI to query any database with an ADBC driver
One command-line tool to query them all, built with Rust and ADBC
718
Gleam v1.17.0
News post: Gleam v1.17.0 released!
719
Branchless Quicksort faster than std:sort and pdqsort with C and C++ API
Performance results naturally depend on the underlying hardware. The following benchmarks show the execution times for sorting 50 million doubles using different sorting implementations. The measurements were taken on an Apple M1 system using Clang and on an AMD Ryzen 3 Linux system using GCC , both compiled with the…
720
QBE – Compiler Backend – 1.3
QBE 1.3 took a while to cook, but it is the most significant release since 1.0 with around 7k new lines of code and 1.5k deleted ones. In addition to the usual bug fixes, QBE gained a new and original IL matching algorithm, new optimizations from Roland Paterson-Jones, Scott Graham added support for the Windows ABI…