os.ReadFile replaced ioutil.ReadFile in 1.16 and is the one-liner for small files.
Language
Snippets written in Go
Fixed number of goroutines draining a channel, with the group ensuring main waits for all of them.
Cancels the request and everything downstream of it after two seconds. The defer is not optional.
The idiomatic Go pattern: a slice of cases and a subtest per entry, each named so failures are readable.