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Jujutsu for busy devs
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Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,747 posts.
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Run a C# file directly using dotnet run app.cs
Run C# files instantly with dotnet run app.cs, no project file needed! Coming to .NET 10, try it out today in Preview 4.
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SQLite concurrency and why you should care about it
SQLite is a powerful database engine, but due to its design, it has limitations that should not be overlooked.
304
Building Bluesky comments for my blog
I hate disqus too much.
305
Xee: A Modern XPath and XSLT Engine in Rust
I announce Xee, the implementation of XPath and XSLT in Rust that I've been working on for the last two years.
306
You Have to Feel It
You see a series of checkboxes checked. Schedules met. Requirements satisfied. Demos delivered. It's a good day. Good job, you, good job! A promotion is in sight.
307
The Case Against PGVector
The real limitations of pgvector in production: index choice between IVFFlat and HNSW, why real-time search is hard, pre- vs post-filtering pain, how performance degrades at scale, and when a dedicated vector database is the better call.
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The Story Behind “100 Go Mistakes and How to Avoid Them”
The Story Behind 100 Go Mistakes and How to Avoid Them
309
A bug saved the company
Fortune favors the buggy?
310
Writing an LLM from scratch, part 8 – trainable self-attention
Moving on from a toy self-attention mechanism, it's time to find out how to build a real trainable one. Following Sebastian Raschka's book 'Build a Large Language Model (from Scratch)'. Part 8/??
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How I build software quickly
Know how good your code needs to be for the task at hand. Start with a rough draft. Try to soften requirements if you can. Don't get distracted. Make small changes. Practice specific skills.
312
Django: what’s new in 6.0
Django 6.0 was released today, starting another release cycle for the loved and long-lived Python web framework (now 20 years old!). It comes with a mosaic of new features, contributed to by many, some of which I am happy to have helped with. Below is my pick of highlights from the release notes.
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Avoid UUID Version 4 Primary Keys in Postgres
Introduction Over the last decade, when working on databases with UUID Version 41 as the primary key data type, these databases have usually had bad performance and excessive IO. https://datatracker.ietf.org/doc/html/rfc4122#section-4.4 ↩
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Can you trust that permission pop-up on macOS?
A security research blog.
315
Okta Bcrypt incident lessons for designing better APIs
Hello there! If you follow tech news, you might have heard about the Okta security incident that was reported on 1st of November. The TLDR of the incident was …
316
PyTorch Monarch
We now live in a world where ML workflows (pre-training, post training, etc) are heterogeneous, must contend with hardware failures, are increasingly asynchronous and highly dynamic. Traditionally, PyTorch has relied...
317
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…
318
Rules for writing software tutorials
It's easier than you think to write an exceptional software tutorial. You can stand out in a sea of mediocre guides by following a few simple rules.
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Doing Rails Wrong
What is a Banana Curving Machine? Well it's a fantastic apparatus that does what it says. Curves Bananas.
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Breaking Git with a carriage return and cloning RCE
tl;dr: On Unix-like platforms, if you use git clone --recursive on an untrusted repo, it could achieve remote code execution. Update to a fixed version of Git and other software that embeds Git (including GitHub Desktop).
321
Bundler Belongs to the Ruby Community
I’ve spent 15 years of my life working on Bundler. When I introduce myself, people say “oh, the Bundler guy?”, and I am forced to agree. I didn’t come up with the original idea for Bundler (that was Yehuda). I also didn’t work on the first six months worth of prototypes. That was all Carl and Yehuda together, back…
322
Hallucinations in code are the least dangerous form of LLM mistakes
A surprisingly common complaint I see from developers who have tried using LLMs for code is that they encountered a hallucination—usually the LLM inventing a method or even a full …
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Learning to read Arthur Whitney's C to become smart (2024)
it's not working
324
Porting Tailscale to Plan 9
Securely connect to anything on the internet with Tailscale. Built on WireGuard®️, Tailscale enables you to make finely configurable connections, secured end-to-end according to zero trust principles, between any resources on any infrastructure.
325
Making any integer with four 2s
There's a cute math puzzle that can be interesting to folks on very different levels:
326
GitHub introduces sub-issues, issue types and advanced search
Following our opt-in preview last year, we are excited to release sub-issues, issue types and advanced search for issues to everyone! 🎉 Thank you to everyone who opted-in and gave…
327
Fast UDP I/O for Firefox in Rust
Motivation Around 20% of Firefox’s HTTP traffic today uses HTTP/3, which runs over QUIC, which in turn runs over UDP. This translates to substantial UDP I/O activity. Firefox uses NSPR for most of its network I/O. When it comes to UDP I/O, NSPR only offers a limited set of dated APIs, most relevant here PR_SendTo and…
328
Microsoft Office migration from Source Depot to Git
Part 7 of my software journey, getting to know developer experience.
329
Notes by djb on using Fil-C
I'm impressed with the level of compatibility of the new memory-safe C/C++ compiler Fil-C (filcc, fil++). Many libraries and applications that I've tried work under Fil-C without changes, and the exceptions haven't been hard to get working.
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Code formatting comes to uv experimentally
uv 0.8.13 adds experimental uv format command that runs Ruff's formatter, similar to how cargo fmt wraps rustfmt.