package main

import (
    "fmt"
    "time"
)

func from(t0 time.Time) {
    fmt.Println(time.Now().Sub(t0))
}

func empty() {
    defer from(time.Now())
}

func count() {
    defer from(time.Now())
    for i := 0; i < 1e6; i++ {
    }
}

func main() {
    empty()
    count()
}