iota is a neat feature of Go that lets us create “enums”: lists of constants with arbitrary values. Let’s find out how to use iota, with this quick tutorial.
All tagged Go
iota is a neat feature of Go that lets us create “enums”: lists of constants with arbitrary values. Let’s find out how to use iota, with this quick tutorial.
Tests communicate a lot of information, to readers, other developers, and even our future selves. Well-written tests focus on a single unit of behaviour that can be described in a brief sentence, and we can use that sentence as the name of the test.
There’s an easy, pleasant, and reliable way to build software in Go, guided by tests. Let’s find out what it’s like to program with confidence, in the first part of this TDD tutorial series.
Now that generics have come to Go, let's take a look at the new syntax for type parameters. We’ll find out why we need type parameters, how we write them, and how we can use them to create generic functions in Go.
Generics what now? This friendly, down-to-earth tutorial series explains how Go’s generic functions and types work, why we need them, and where we can use them.
The iterator proposal is a neat way to write “lazy loops”, where we never generate more results than we actually use. Let’s see what that would look like in Go programs.
AES is the modern standard encryption algorithm, but how does it work? Where does it come from? Let’s kick the tyres with a high-level overview of AES internals.
Which is a better choice, Rust or Go? Which language should you choose for your next project, and why? How do the two compare in areas like performance, simplicity, safety, features, scale, and concurrency?
What are the best Go books for 2024? Read my (relatively) unbiased recommendations for the Go books you should absolutely buy and read right now, whether you’re a beginner or expert Gopher.
In the thrilling conclusion to our fuzz testing series, we’ll use Go’s fuzzer to find a real bug in our code, and also to verify the fix.
Let’s continue our exploration of fuzz testing in Go with a look at how to write a fuzz target for a (nearly) realistic function. This time we’ll try to detect a common kind of bug involving a confusion between runes and bytes.
Fuzz testing is Go’s clever way of generating new test inputs that you didn’t think of—and that may flush out some hidden bugs. Stand by for things to get a little fuzzy!
What is the Tao of Go, and how can we work with it, like a surfer going with the waves instead of struggling against them? By being kind, simple, humble, and not striving; here’s how.
Choosing good test cases for our Go programs can be a bit hit-and-miss. What if we could automate that process? Let’s talk about randomisation, property-based testing, and Go’s built-in fuzz testing feature.
How do you test a database without a database? Don't worry, this isn't one of those Zen puzzles. I have something more practical, but equally enlightening, in mind. Let’s use the adapter pattern to solve the riddle.
To celebrate the first anniversary of generics in Go, let’s build something practical and useful: a generic Set type, and add some neat methods to it. Ready for fun?
In Part 2 of a series about writing packages, not programs, we see how to test a package that prints to the terminal, and use the result to build our “hello, world” CLI tool.
Go has a great standard library. What if we think about our work not merely as building one-off programs, but instead contributing packages to the universal Go library?
Did you know that Go lets us provide executable code examples as part of our documentation? It’s pretty neat. Let’s take a tour of this useful feature and see how it works.
Distinguishing between specific error values and types is easy in Go, thanks to the (relatively) new errors.Is and errors.As functions. Let’s talk about what they do, when and how to use them, and how to know which one is appropriate.