Holy cheese my untyped composite literal proposal from 2015 just got accepted. #golang github.com/golang/go/is...

>benchmark perf improvements >it's slower

Compiler nerd joy: making some #golang switch statements ~2.5x faster ⚡ go.dev/cl/756340

“Type Construction and Cycle Detection” by Mark Freeman — https://go.dev/blog/type-construction-and-cycle-detection #golang

Find out how the source-level inliner in Go 1.26 can help you with API migrations. go.dev/blog/inliner

“//go:fix inline and the source-level inliner” by Alan Donovan — https://go.dev/blog/inliner #golang

Additionally, I want to speak directly to Iranian New Yorkers: you are part of the fabric of this city — you are our neighbors, small business owners, students, artists, workers, and community leaders. You will be safe here.

“Allocating on the Stack” by Keith Randall — https://go.dev/blog/allocation-optimizations #golang

🚀 "spec: generic methods for Go" has been accepted! You will soon (1.27?) be able to declare (on concrete types only) methods that introduce type parameters, i.e. type parameters other than the ones (if any) that come from the method's receiver. github.com/golang/go/is... #golang

My phone is now hot but the best part is I’m not sure if that is from the CPU emulator or from GitHub trying to render the 14k source file when I went to see how this works.

Dependabot security alerts have terrible signal-to-noise ratio, especially for Go vulns. That hurts security! Just turn it off and set up a pair of scheduled GitHub Actions, one running govulncheck and the other running CI with the latest version of your deps. Less work, less risk, better results!

“Using go fix to modernize Go code” by Alan Donovan — https://go.dev/blog/gofix #golang

Go 1.26 is out, and the announcement says: "Over the next few weeks, follow-up blog posts will cover some of the topics in more detail. Check back later." So you can wait a few weeks OR you can read my interactive Go 1.26 tour right away: antonz.org/go-1-26

Some pretty awesome improvements in 1.26 for compiling/testing typescript-go. With a clean build/test cache, running the full test suite used to take 3m45s, but now takes just 2m10s.

“Go 1.26 is released” by Carlos Amedee, on behalf of the Go team — https://go.dev/blog/go1.26 #golang

🍵

$ jj describe -m "Hello, world!"

ICE out of my compiler

Interesting expansion of generics in #golang 👀

New blog post, with a perhaps mildly unpopular opinion: jayconrod.com/posts/133/in...

We are hiring! CPU security and stuff www.google.com/about/career...

My GopherCon talk was just posted!

PSA: go.sum is not a lockfile. You never need to look at go.sum. go.mod has everything you need.

Go 1.26 is coming soon, and the official release notes are pretty dry. So I prepared an interactive version with lots of examples. Read on and see! antonz.org/go-1-26

The folks behind GopherCon 2025 have kindly shared video recordings of our talks; here's mine on modernizer tools for Go. Special thanks to the amazing Stacy Potenza for turning my rapid limey nerd mumbling into comprehensible closed captions. www.youtube.com/watch?v=_VeP...

My colleague Sanjay Ghemawat & I have done a fair bit of performance tuning of various pieces of code. We wrote an internal Performance Hints document ~2 years ago as a way of identifying some general principles & we've recently published a version of it externally. Doc: abseil.io/fast/hints.h...

🎊 Go 1.26 Release Candidate 1 is released! 🏃‍♀️ Run it in dev! Run it in prod! File bugs! https://go.dev/issue/new 🗣 Announcement: https://groups.google.com/g/golang-announce/c/i0ei8EKtYjc/m/h0jl7InPCwAJ ⬇️ Download: https://go.dev/dl/#go1.26rc1 #golang

What's new in gopls 21: go.dev/gopls/releas... Please try it out: $ go install golang.org/x/tools/gopls@latest

Gist of Go: Concurrency is out! Learn Go concurrency from the ground up with 50 auto-tested exercises and tons of interactive examples. It's a full course + book in one. antonz.org/go-concurrency

"why i think #jj-vcs is worth your time" schpet.com/note/why-i-t...

The new chapter of my Go Concurrency book covers the scheduler and its implementation details. It's not meant to be a deep dive. But it's short, easy to understand, and will teach you more about goroutine scheduling than many other developers know. antonz.org/go-concurren...

I documented the steps and missteps I took with jj (jujutsu) getting a repo set up from scratch, initial commits made, and pushed to github. This is the intro workflow I needed, but couldn't find. www.visualmode.dev/from-zero-to...

Accepted! Go 1.26 will introduce per-state goroutine metrics: running, waiting, in syscalls, etc. Developers can use them to catch problems early without needing full traces. antonz.org/accepted/gor...

BREAKING: This is huge news, the EU's equivalent of the 🇺🇸Supreme Court's 2015 Obergefell v. Hodges ruling. 🇪🇺Court of Justice just ruled all 🇪🇺countries must recognise same-sex marriages granted in other member states. This effectively legalises gay marriage across 🇪🇺

synctest — the package introduced in Go 1.25 to make concurrency testing easier — looks deceptively simple. But don't let its innocent appearance fool you. To really understand synctest, check out the new chapter of my interactive Go Concurrency book. antonz.org/go-concurren...

Small contribution just before the Go 1.26 freeze: go.dev/cl/610815 removes the hard-coded 100ms sleep from the CPU profiler for most platforms. This will make it more efficient and unblock deeper call stacks. As a bonus, uncovered and fixed an 8 year old bug in the profiler go.dev/cl/722940 :)

My talk from GopherCon 2025 about Green Tea is up on YouTube! www.youtube.com/watch?v=gPJk...

#GopherCon 2025 - the first videos are up! @michael.express gives a great overview of how the Go garbage-collector works, and the changes in the the new design. www.youtube.com/watch?v=gPJk...

“Go’s Sweet 16” by Austin Clements, for the Go team — https://go.dev/blog/16years #golang

"By doing things voters wanted, he set unrealistic expectations. Soon, voters will expect ALL politicians to represent their interests. Then where will we be?” www.mcsweeneys.net/articles/yea...

New blog post: I'm Independently Verifying Go's Reproducible Builds: www.agwa.name/blog/post/ve...

If you have an interest in understanding garbage collection better, or in how Go's new GC works under-the-hood, I highly recommend reading @michael.express's thorough guide through Go's current and Green Tea GC.

Extremely happy to see Source Spotter, a Go Checksum Database monitor and Go toolchain reproducer by @agwa.name. These use the transparency logs we built into the Go supply chain to keep the Google-operated services honest.

Flame Graphs in Go https://lemire.me/blog/2025/10/26/flame-graphs-in-go/

I got frustrated with how GitHub Actions lets workflows with read-only permissions poison the cache of read/write workflows (!!??!?), so yesterday night I put together an Action that runs commands in a gVisor sandbox.

As professional maintainers we can invest in making our projects safer and more reliable. To that end, here's a draft of the Geomys Standard of Care. It covers general maintenance, stability & reliability, dependency management, account and CI security, vulnerability handling, licensing, and more.

Today's bug of the day has it all: ultimately caused by missing zero-initialization, bug in libc (-ish, arguably), copious use of setjmp/longjmp. I love C. github.com/ericphanson/...

To implement robust mitigations across Geomys, I did a survey of open source project compromises in 2024/2025. Three root causes dominate: phishing, control handoff, and unsafe GitHub Actions triggers. All three can be systematically avoided. words.filippo.io/compromise-s...

🥳 Go 1.25.2 and 1.24.8 are released! 📢 Announcement: https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI/m/qZN5nc-mBgAJ 📦 Download: https://go.dev/dl/#go1.25.2 #golang