Idioms

Go 1.23 stabilised range over function iterators, a feature that had been in the rangefunc experiment since 1.22. It’s the most significant addition to the range statement since channels were added. The reaction has been mixed: people who needed it find it elegant; people who didn’t need it find it confusing. Both reactions are reasonable. Here’s what it actually does and where it belongs. ...

Go has a strong house style that experienced practitioners converge on. Some of it is enforced by gofmt and golint. The rest is transmitted through code reviews, the standard library, and writing enough Go to feel the natural grain of the language. After several years of Go, here are the patterns that mark idiomatic code and why they work. ...