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Steve Klabnik

Steve Klabnik

@steveklabnik.com

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Steve Klabnik's personal website and blog

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13d agoLast active

Too many words about DIDs

Your “Bluesky account” is not just a Bluesky account: it is an account that can be used with a variety of other applications. This post is going to be an exploration of part of what that means from a technical perspective, so if you’re not a software developer, this post isn’t…

Compilers and AI 'cyber' defense

I haven’t had time to blog in a while, I have a lot to say, but have been doing a lot of things and so haven’t gotten words down in a while. One of those things in the past few weeks has been picking back up my Rue project. I’m really excited for what it’s turning into, even…

The most important thing when working with LLMs

Okay, so you’ve got the basics of working with Claude going. But you’ve probably run into some problems: Claude doesn’t do what you want it to do, it gets confused about what’s happening and goes off the rails, all sorts of things can go wrong. Let’s talk about how to improve…

Agentic development basics

In my last post, I suggested that you should start using Claude in your software development process via read-only means at first. The idea is just to get used to interacting with the AI, seeing what it can do, and seeing what it struggles with. Once you’ve got a handle on that…

How to think about Gas Town

I want to continue with my series on how you can use Claude Code for software development , but I have at least two posts I need to write first. This post is one of those two. Thanks for all of the kind words you all have said about the first post in the series, I’ll absolutely…

Getting started with Claude for software development

2025 was an interesting year in many ways. One way in which it was interesting for me is that I went from an AI hater to a pretty big user. And so I’ve had a few requests for a “using Claude” guide, so I figure new year, why not give it a shot? The lack of this kind of content…

Thirteen years of Rust and the birth of Rue

I started using Rust on December 21, 2012. It’s now December 22, 2025. That’s a long time. I don’t have a ton of thoughts about Rust to share today, like I thought I might. I program in the language regularly, it’s nice, I prefer it to all others. I have my beefs and my regrets,…

I see a future in jj

In December of 2012, I was home for Christmas, reading Hacker News. And that’s when I saw “ Rust 0.5 released ."" I’m a big fan of programming languages, so I decided to check it out. At the time, I was working on Ruby and Rails, but in college, I had wanted to focus on…

A tale of two Claudes

It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of…

Is Rust faster than C?

Someone on Reddit recently asked: What would make a Rust implementation of something faster than a C implementation, all things being the same? I think this is a great and interesting question! It’s really tough because it ultimately relies on what exactly you mean by “all things…

I am disappointed in the AI discourse

Recently, something happened that made me kind of like, break a little bit. I’m still not entirely sure why this whole thing bothers me so much, but here’s a blog post about it. I happened to ask ChatGPT something for fun. I often do this just to see what it says, and if I feel…

Rust 1.0, ten years later

It’s kind of hard to believe it’s been ten years since Rust 1.0 was released. I stopped working on Rust three years ago, and frankly, the last three years have been pretty rough. But 2025 is shaping up to be a really good year for me, with lots of positive changes. With that in…