Go subtleties

> The wg.Go Function

> Go 1.25 introduced a waitgroup.Go function that lets you add Go routines to a waitgroup more easily. It takes the place of using the go keyword, [...]

99% of the time, you don't want to use sync.WaitGroup, but rather errgroup.Group. This is basically sync.WaitGroup with error handling. It also has optional context/cancellation support. See https://pkg.go.dev/golang.org/x/sync/errgroup

I know it's not part of the standard library, but it's part of the http://golang.org/x/ packages. TBH, golang.org/x/ is stuff that should be in the standard library but isn't, for some reason.

I thought exactly the same thing. I use errgroup in practically every Go project because it does something you'd most likely do by hand otherwise, and it does it cleaner.

I discovered it after I had already written my own utility to do exactly the same thing, and the code was almost line for line the same, which was pretty funny. But it was a great opportunity to delete some code from the repo without having to refactor anything!