Async/Await-like pattern in Go to make concurrency simple, robust, less boilerplate

disclaimer: Goroutine For beginners of Go who come from other "colored" languages like JavaScript, one big difference in Golang's mental model is Goroutine. func Add() int { a := 1 b := 2 var c int doneSignal := make(chan struct{}, 1) go func() { // fire a function running in