func ExampleTimer_Print_cumulative() {
t := timer.Start()
// time-consuming code
t.Print("first part")
// more time-consuming code
t.Print("total")
}
func ExampleTimer_Print() {
defer timer.Start().Print()
// time-consuming code
}
func ExampleTimer_Printf() {
defer timer.Start().Printf("%.2f", .9999)
// time-consuming code
}