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Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 21,843 posts.
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Garbage collection without unsafe code
Many people, including myself, have implemented garbage collection (GC)libraries for Rust. Manish Goregaokar wrote up a fantastic survey of thisspace a few y...
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Boring Python: dependency management (2022)
*This post has been significantly updated since it was originally written. The most recent update was in September 2026; a …
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Why we don’t use AI
We get asked about AI a lot. Whether we’re going to add it to Yarn Spinner, whether we use it ourselves, what we think about it. Fair questions. Time to write it all down. Yarn Spinner doesn’t use the technology that’s currently being called AI. We don’t have generative AI features in the product, and we don’t use…
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Compilers are too smart
Last week I noticed some unexpected assembly code in a function calling std::unordered_map::find (yes, I know, friends don’t let friends use STL, but that is a topic for another discussion). I decided to investigate a bit and it turned out to be quite a journey. It was a Clang compiler, ARM-based platform, I will use…
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Ten Ways to Check if an Integer Is a Power Of Two in C
To write a program to check if an integer is a power of two, you could follow two basic strategies: check the number based on its decimal value, or check it based on its binary representation. The former approach is more human-friendly but generally less efficient; the latter approach is more machine-friendly but…
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Native-like Navigation of Web apps
Native-like Navigation for Web apps
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Python sets and dictionaries can have quadratic-time performance
In Python, the dict data structure is the conventional key-value structure. E.g., you might store a list of names as keys and have their phone numbers as values. Valentin Ignatev wrote this amusing post on X: It is indeed widely believed that, in the strict sense, the dict data structure and its companion, the set ……
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SQLite: The art of keeping it simple
16 years after its first checkin , SQLite is the most widely deployed database engine in the world. such open source project is a good candidate to learn how to make your code easy to understand and to maintain.
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Understanding Clojure's Persistent Vectors, pt. 1 (2013)
Ever wondered how Clojure's persistent vector actually works? This is part 1 of a blog series which aims to explain them.
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Generic Containers in C: Safe Division Using Maybe
Martin Uecker, 2025-08-10 I discuss the implementation of type and bounds safe generic containers in C. Previously, I discussed a span type , bounds checking using arrays . and a a vector type . This time, I will discuss maybe inspired by Haskell. This type can used to return a value that may not exist, e.g. because…
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Basecamp 3 for iOS: Hybrid Architecture
We’ve written quite a bit in the past about our approach to building hybrid mobile apps. Basecamp 3 represents the latest generation of this architecture, taking everything we’ve learned from previ…
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A Tour of Safe Tracing GC Designs in Rust
I’ve been thinking about garbage collection in Rust for a long time, ever since I started working on Servo’s JS layer. I’ve designed a GC library, …
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Rust Faster
This is a co-production with Veedrac, who wrote most of the awesome technical details.
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Scaling Git’s garbage collection
A tour of recent work to re-engineer Git’s garbage collection process to scale to our largest and most active repositories.
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Validating Data in Elixir: Using Ecto and NimbleOptions
In the second part of our series, we'll explore how to avoid bad data using Ecto and NimbleOptions.
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Coming Soon in HHVM
The next HHVM release, 3.6, is on the horizon. We expect it to be released at the very end of February or in early March. It’s going to be a big release. Not...
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SQLAlchemy Migrated from Mercurial to Git
The Database Toolkit for Python
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Django 6.0 beta 1 released
Posted by Natalia Bidart on Oct. 22, 2025
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GitLab 12.5
GitLab release announcements and feature highlights.
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How we send 22k emails every hour
Our app sends and receives about 22,000 (22 thousand) emails per hour. That's more than half a million emails every day and it sometimes peaks to 25-30 emails EVERY SECOND
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A few facts about POSIX
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