Have you ever found yourself cursing at your computer because you needed to access a private function, method, global variable or type in Go? Did it seem practically impossible? Well — it’s not, and this blog post is for you.

ErrGroup provides a powerful mechanism for managing a group of concurrent subtasks, taking into consideration errors, context cancellation, and more.

Go’s goroutines, channels, and mutexes make it easy to develop complex concurrency systems. Most problems can be solved using these three mechanisms, but you might be asking yourself — what else is out there?