-- .Play --
package main

import (
	"fmt"
)

func main() {
	fmt.Println("Hello, world!")
}
-- .Output --
Hello, world!
-- Limiter.Play --
package main

import (
	"fmt"
	"time"

	"golang.org/x/time/rate"
)

func main() {
	// Uses fmt, time and rate.
	l := rate.NewLimiter(rate.Every(time.Second), 1)
	fmt.Println(l)
}