Interested in learning to code in 2025? Here's some of my tips & advice. 🧵

Want to learn #golang in 2026? My courses are on sale! Web Development with Go - usegolang.com Test with Go - testwithgo.com Save 40% on either course until Jan 10th. Gophercises.com is free and a great way to practice as you learn.

I'm hiring for senior Go engineers to join us at @ona_hq! If you are: - AI native; using tools like Cursor, Claude code and Ona daily. - Are excited about building AI agents and the mission control platform that they will run on, entirely in Go. - Have 3-5 years of production Go experience. - Are based in London (remote Europe available too for exceptional folks). Then I'd love to have a virtual coffee with you and see if there is a mutual fit here. Drop me a DM. NOTE: We cannot sponsor visas right now so if you are not already located in Europe then please do not message as there will not be any exceptions.

"Mac usability is characterized by its user-friendly, intuitive interface..." says nobody ever when trying to disable reactions on all video apps. 😫

If you haven't already, fill out the Go Developer Survey! Regardless of your experience level, it helps the Go team plan for the future. google.qualtrics.com/jfe/for…

Did you know that Go's encoding/json package isn't case-sensitive when parsing JSON keys? This is one of the defaults proposed to change in Go's new json/v2 package. #golang #json

In Go, ExampleXxx functions double as docs & tests. ✅ Tests verify code is working by comparing the output. 📖 godocs embed runnable examples, making it easier for devs to get started. #golang #testing

💡 In Go tests, mark helper functions like assertEquals and doRequest with t.Helper() This causes the Go tooling to point to the line where the function was called rather than a line in the helper function, which makes it easier to debug a failing test. #golang

There are two ways to create paths in Go depending on your needs. 👉 Constructing a file path in Go? Use filepath.Join from the path/filepath package to get OS-specific separators. 👉 Constructing a slash-seperated path, like a URL? Use path.Join from the path package to get the same results regardless of OS. These may appear to be identical if running a unix-based OS, but they will behave differently in a Windows environment. #golang

Is there a #golang playground that simulates running code on Windows? Would be nice for demonstrating OS-specific differences, but I recognize it is a pretty niche.

GoLand users - what are your favorite features and tips? I’ve been trying it out to do a bit of a comparison, but I want to hear from #golang developers who have been using it for a bit.

The init() function in Go runs before main() or any tests. This makes it alluring to new developers for setting things up, but it has a few downsides: 1️⃣ It introduces hidden behavior. If someone imports a function with init in it, code runs without them ever realizing it and this can lead to bugs or confusion. 2️⃣ Using init almost always means using global variables, making testing and dependency injection harder 3️⃣ Multiple init functions can run in unpredictable order Instead, prefer explicit setup. #golang

The testing/synctest library is an awesome library to simplify your #golang tests that deal with time or concurrent code. If you have any tests that are flaky due to the use of time.Now(), timeouts, or intervals, you need to check synctest out. calhoun.io/simpler-faster-co…

Go's time.Ticker is a great tool for running the same code on a set interval. For instance, you could use it to check the health of a server every 5 minutes and send you a notification if it has any issues.

Looking for a quick way to improve the readability of your #golang tests? Check out Michael Lynch's blog post: mtlynch.io/if-got-want-impro… Even if you don't agree with it completely, there are some great tips and ideas to consider.

I've been using Warp (warp.dev/) as my terminal for the last few months, and there are so many fun little features that you get without doing anything extra. For instance, if you run "go vet" or if your program panics, it frequently suggests a fix.

Using sync.WaitGroup in your Go code to track when goroutines are finished? Avoid the common mistake of calling Add inside of the goroutine. Go 1.25 has even added a check for this in "go vet", as well as a helper fucntion - WaitGroup.Go - to help avoid this issue. #golang