Time a function

timer.go

// Golang UK Conference 2016 - Mat Ryer - Idiomatic Go Tricks
func StartTimer(name String) func() {
	t := time.Now()
	log.Println(name, "started")
	return func() {
		d := time.Now().Sub(t)
		log.Println(name, "took", d)
	}
}

func FunkyFunc() {
	stop := StartTimer("FunkyFunc)
	defer stop()
	
	// preceed with actual function
	time.Sleep(1 * time.Second)
}