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Ghostty 1.4
Release notes for Ghostty 1.4.0, released on October 27, 2026.
New
The latest blog posts to take off on Hacker News. 21,810 posts.
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A new faster algorithm to compute 64-bit signed floor division
The missing chapter of Hacker's Delight
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Why a program doesn't work when run from a batch file, but works when clicked
Mimicking the operation more accurately.
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Iterating Backwards in C
This is shorter than some of my other posts, but I keep seeing people doing this wrong. It's even worse now in the LLM era.
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A Man from the Future: Why Johnny Can't Stop Abstracting
I have come to suspect that to most people thinking is painful. Some of us are addicted to thinking. Some of us find it a necessity. Johnny ...
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Sebastian Raschka's from-scratch video course on building reasoning models
Over 11 hours of coding videos on evaluation, inference-time scaling, reinforcement learning, and distillation, with Python and PyTorch.
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Fixing Tool-Call Accuracy in vLLM
Tool call accuracy is an important part of serving open-weight AI models. When your tool calls aren’t accurate, the model builds up on nonsensical context. We’ve been carrying our own fork of vLLM to hit 100% in tool call schema accuracy with Kimi and DeepSeek. Fortunately, vLLM 0.31 added support for constrained…
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Pharo 14
Pharo is a pure object-oriented programming language and a powerful environment focused on simplicity and immediate feedback.
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SIMD-accelerated computer vision on a $2 microcontroller
An accelerated FAST feature detector for the ESP32-S3 leveraging 128-bit SIMD instructions, achieving ~2x the performance of the reference implementation.
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OpenLDK: Bringing the Java World into Common Lisp
Java classes become CLOS classes, seven JVM languages share one Lisp expression, and a saved Spring Boot application launches in 84 milliseconds.
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We should be more ambitious with the software we build
Since early this year, Michael Malis (of pgrust ) has been showing me interesting things he's done and saying
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Small Programs and Languages
My Implementing a Forth article got some great feedback, particularly around the subject of tiny Forth implementations. (And it was an excuse to list some of the tiniest Forths I’ve seen.)
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Bbtree: Fastest Ordered Map
How bbtree, a drop-in replacement for std's BTreeMap, cuts cache misses, instructions and cache coherence traffic, and how it is kept correct.
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Decompiling Fast Food Tycoon 2: Drawing the World
How a 2001 business sim rendered its rich and detailed cities.
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How close can pure functional programming get to C?
In Why Lean is Faster Than Rust , the author shares an impressive result: a DEFLATE compression library written in Lean 4 , a functional programming language and proof assistant, outperforming an equivalent Rust package that crates.io says has been downloaded over a billion times. From the article:
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UUIDv7: Timestamps aren’t time-ordered and other oddities
When timestamps aren’t time-ordered and other oddities
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Gemma-4-26B-A4B with 39-69% less thinking at same accuracy
This is the fifth model in the ThinkingCap series. We reduced how much Google's gemma-4-26B-A4B-it thinks, without compromising the quality of its answers.
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Growing Trees
Growing procedural trees through competition for light: buds, resource allocation, shoot direction, and branch shedding.
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Docker is weird
I decided to make my own container runtime for fun, and even though I’m still early on, I’ve learned that Docker is weird . Here’s some weird things I learned about Docker.
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LLMs are making formal software verification feasible at a much larger scale
Claude formally proved security properties in the compiled code of 123 open-source libraries. Along the way, it found bugs that had eluded detection for years.
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Crystal 1.22
We are announcing a new Crystal release 1.22.0 with several new features and bug fixes.
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Faster than earcut: triangulating 3.7M map polygons in 489 ms
We published the triangulator of our map engine as earstrip, an ISC-licensed C++ and WebAssembly library. How it came to be: the ear clipper rebuilt one idea at a time and timed on 3.7 million polygons of real map data.
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WorldTUI: I trained a 360M model to pretend to be a terminal
A 360M model that pretends to be a terminal, and remembers what you did
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The compiler was supposed to end programming too
In 1954, IBM said FORTRAN would virtually eliminate coding and debugging. What the numbers say about AI and software work in 2026, and my guess at a developer's Tuesday in 2031.
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Today's PHP security release, and how we're strengthening security
Describing the story behind how critical security vulnerabilities were found and fixed.
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DuckDB 2.0.0 LTS “Cinnamon Teal”
The DuckDB team is happy to announce that today we're releasing DuckDB version 2.0.0 LTS, codenamed “Cinnamon Teal” (Spatula cyanoptera). This is our biggest feature release so far, and it ships a polished version of the Quack protocol, asynchronous I/O, a first-class VARIANT type, agent mode, triggers, an extensible…
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PHP2Shell by Calif Research
A tale of two PHP remote vulnerabilities
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Compromised LiteLLM 1.107.0 on PyPI Installs a Credential Stealer and Backdoor
LiteLLM 1.107.0 on PyPI ships a .pth credential stealer and a sitecustomize.py backdoor that run on every Python start. How the implant got in, what it steals, and indicators of compromise.
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C vs. C#: racing VLC's Gaussian blur
A real VLC video filter, ported line by line to C# and raced against the original C inside VLC 4, then optimized on both sides, with byte-identical output throughout.