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We're training a Figma-fluent editing model
Here, we’re sharing the research behind how we’re translating that to design editing workflows.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 455 posts.
332
DLL that was not present in memory despite not being formally unloaded
Figuring out how it went missing.
333
We just shipped support for the ugliest part of HTTP: Vary
Vary support is now available in Cache Rules on every plan. You can normalize known negotiation headers, pass exact values through to the origin when those small differences matter, or bypass cache when the variation is too unpredictable.
334
Stop sending me huge PRs; a rant
Micropayment-powered stories
335
VHDL's Crown Jewel
How VHDL preserves determinism In this post, I would like to talk about VHDL’s crown jewel: how it preserves determinism in a concurrent language. Here is a figure of how it works:
336
Differences Between `Foldl` and `Foldr`
`foldl` and `foldr` can be confusing, so let's work out what's up
337
You can run Git on object storage if you re-make packfiles
Git packfiles were designed for mmap and local disk, so pulling one object out of a bucket means guessing at a byte range. I wrote a new format instead.
338
CJIT: C, Just in Time
Run, compile, and link C programs instantly with CJIT.
339
Improving the usability of C libraries in Swift
There are many interesting, useful, and fun C libraries in the software ecosystem. While one could go and rewrite these libraries in Swift, usually there is no need, because Swift provides direct interoperability with C. With a little setup, you can directly use existing C libraries from your Swift code.
340
Nobody ever got fired for using a struct
Rust struct serialization problem caused by many nullable SQL columns.
341
Reflections on 30 years of HPC programming
This summary of Brad’s HIPS 2025 keynote looks at how HPC programming has (and has not) changed over the past 30 years
342
Cohere's First Model for Developers
Meet North Mini Code, Cohere's first open-source agentic coding model: a 30B MoE that codes strongly on minimal hardware.
343
Deno 2.9
`deno desktop` for building native desktop apps from web tech, first-class migration from npm/pnpm/yarn/Bun, CSS module imports, snapshot and parameterized testing, smaller `deno compile --bundle` binaries, and Node.js 26 compatibility.
344
Orchestrating AI code review at scale
Learn about how we built a CI-native AI code reviewer using OpenCode that helps our engineers ship better, safer code.
345
Why building a Rust LSP is hard
Rust LSP that doesn't eat memory for breakfast
346
21 years and counting of 'eight fallacies of distributed computing' (2025)
Eight long held and common beliefs about the network have been shown, time after time, to be false. What are they, and what do they mean?
347
The Agent SDK
The Agent SDK is the framework we use to build our own managed agents like Bugbot, Security Reviewer, and Rollouts. Define agents in code and deploy them with one command.
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They lied to you. Building software is hard
Every week there seems to be a new tool that promises to let anyone build applications 10x faster. The promise is always the same and so is the outcome.
349
British Columbia, Time Zones, and Postgres
This year, British Column has moved to year-round Pacific Time. How does that affect date data?
350
The RISE RISC-V Runners: free, native RISC-V CI on GitHub
Today, we are excited to announce the Early Availability of the RISE RISC-V Runners , a free, managed GitHub Actions runner service that gives any open source project access to real RISC-V hardware in their CI pipelines. No emulation, no cross-compilation hacks, no waitlist. Install a GitHub App, change one line in…
351
Announcing Rust 1.96
Empowering everyone to build reliable and efficient software.
352
How Kubernetes Probes Work
Learn how probes work interactively on simulated Kubernetes clusters running in your browser.
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New features in GCC 16: Improved error messages and SARIF output
Explore new GCC 16 features for C++ developers. Learn about improved hierarchical error messages, updated SARIF output, and experimental HTML diagnostic tools.
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Racket v9.3
_posted by Stephen De Gabrielle and John Clements_ We are pleased to announce Racket v9.3 is now available from https://download.racket-lang.org/. As of this release:: The `raco setup` command can generate markdown documentation, using the `--doc-mark...
355
The Little Bool of Doom (2025)
A short story about debugging and how sometimes what's true is false. Starring everyone's favourite uncle, Undefined Behaviour.
356
Lix – universal version control system for binary files
Lix is a version control system you import as a library. It records semantic changes to enable diffs, reviews, rollback, and querying of edits.
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A good AGENTS.md is a model upgrade. A bad one is worse than no docs at all
We pulled dozens of AGENTS.md files from across our monorepo and measured their effect on code generation. The best ones gave our coding agent a quality jump…
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Hyprland 0.55 announced the switch to Lua for its config files
After quite a long while, Hyprland 0.55 is upon us! This is an enormous update by each measurable metric - commits, contributors, features and changes.
359
Why a program doesn't work when run from a batch file, but works when clicked
Mimicking the operation more accurately.
360
Protobuf-py: Protobuf for Python, without compromises
We're announcing protobuf-py, a complete, 100% conformant Protobuf runtime for Python that feels like Python and matches the performance of Google's C engine on real workloads.