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C constructs that still don't work in C++
A 2026 sequel to C Constructs That Don't Work in C++: what still breaks, what C++20 changed, and what C23 changed.
New
The latest blog posts to take off on Hacker News. 14,535 posts.
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Python 3.15: features that didn't make the headlines
It's that time of the year again, a new version of Python is just around the corner. With the Python 3.15.0b1 feature freeze, we know what's...
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SBCL: the ultimate assembly code breadboard (2014)
Paul Khuong's personal blog. Some Lisp, some optimisation, mathematical or computer.
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Formal Verification Gates for AI Coding Loops
Formal verification gates for AI coding loops, in the language you're already shipping.
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sp.h: Fixing C by giving it a high quality, ultra portable standard library
Over the past year, I’ve been working on fixing C by giving it a high quality, ultra portable standard library. It is not a simple wrapper on top of libc; it doesn’t depend on libc except when required to by the platform. To my knowledge, there is nothing like it.
516
The quadratic sandwich
If you have ever tried to minimize a function with gradient descent, you probably noticed that some functions are a joy to optimize and others are a nightmare. The difference often boils down to two properties: strong convexity and L-smoothness. These two concepts define a “sandwich” of quadratic bounds around your…
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Learnings from 100K lines of Rust with AI (2025)
In the past few months, I’ve been stress-testing how far AI coding agents can take us when building real, production-grade distributed systems. The result: a Rust-based multi-Paxos consensus engine that not only implements all the features of Azure’s Replicated State Library (RSL) [1] — which underpins most major…
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Everything in C is undefined behavior
If he had been a programmer, Cardinal Richelieu would have said “Give me six lines written by the hand of the most expert C programmer in the world, and I wi...
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PHP's Oddities
flow2 | Blog post: 'PHP's Oddities' in Tech
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Using HTTP/2 Cleartext for a server in Go 1.24
I'll give a brief outline of how to enable HTTP/2 cleartext (h2c) in a Go API server when you are using Go 1.24 or newer. This is useful in Cloud Run environments, which handles TLS termination but can take advantage of HTTP/2 features.
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No more JetBrains products for me
The personal website of Matthew Kosarek
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The occasional ECONNRESET
Two services running on the same machine. One of them opens a listening TCP socket bound to localhost, the other one connects to that. They exchange data. Every now and then , the service that initiated the connection gets an ECONNRESET while reading data from the socket -- but no other errors show up in the logs, no…
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Intro to TLA+ for the LLM Era: Prompt Your Way to Victory
You can go far without writing TLA+ syntax now, but you still need to understand temporal logic.
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Native all the way, until you need text
Why building a rich, selectable, streaming Markdown chat UI on macOS still pushes you toward WebKit or Electron.
526
Hosting a website on an 8-bit microcontroller
My victim is the AVR64DD32 which is quite similar to the Atmega328 of Arduino fame. Compared to the older Atmega, these AVR DD lines are cheaper for the same memory, use a single programming pin and have nicer peripherals:
527
HTML Lists
This second installment in the "You don't know HTML" series is going to be all about the ways that we put collections of things together
528
DeepSeek-V4-Flash means LLM steering is interesting again
Ever since Golden Gate Claude I’ve been fascinated with “steering”: the idea that you can guide LLM outputs by directly manipulating the activations of the…
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My Favorite Bugs: Invalid Surrogate Pairs
In which I revisit one of my favorite bugs, the invalid surrogate pair.
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'No way to prevent this,' says only package manager where this regularly happens
Kevin Patel - Application Security Engineer @ NISC
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Additive Blending on the Nintendo 64
Did you ever wonder why explosions and other effects looked so much cooler on the original PlayStation than they did on the Nintendo 64?
533
Prolog Basics Explained with Pokémon
Demonstrating the basics of logic programming with data from the Pokémon games.
534
O(x)Caml in Space
On 23 April, Borealis booted in orbit on DPhi Space's ClusterGate-2: a pure-OCaml CCSDS protocol stack with end-to-end-encrypted command and control and post-quantum key rotation. OxCaml is what comes next.
535
C++26 Shipped a SIMD Library Nobody Asked For
std::simd Can't Express 90% of Real SIMD Code
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Building ML framework with Rust and Category Theory
A modular, compile-checked tutorial for learning category-theory ideas through a tiny Rust ML pipeline.
538
The Third Hard Problem
It’s not off-by-one errors.
539
The Emacsification of Software
Everything looks like Emacs now: personal, complicated, idiosyncratic, and shrink-wrapped around exactly what you want it to do. Does shipping software even make sense in the long run?
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My graduation cap runs Rust
Eric Park's website