// Goroutines are lightweight threads (managed by Go, not OS threads).
// `go f(a, b)` starts a new goroutine which runs `f` (given `f` is a function).
//
// just a function (which can be later started as a goroutine)
func doStuff(s string) {
}
//
func main() {
    // using a named function in a goroutine
    go doStuff("foobar")

    // using an anonymous inner function in a goroutine
    go func (x int) {
        // function body goes here
    }(42)
}