_content/tour/basics/packages.go - website - Git at Google

 // +build OMIT

 package main

 import (
 	"fmt"
 	"math/rand"
 )

 func main() {
 	fmt.Println("My favorite number is", rand.Intn(10))
 }
	// +build OMIT

	package main

	import (
	"fmt"
	"math/rand"
	)

	func main() {
	fmt.Println("My favorite number is", rand.Intn(10))
	}