if, switch, goto / switch statement / Essential Go
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package main
import (
"fmt"
"math/rand"
"time"
)
func main() {
// without seeding rand.Intn will always return the same sequence
rand.Seed(time.Now().UnixNano())
switch n := rand.Intn(9); n {
case 1, 2, 3:
fmt.Printf("case 1, 2, 3: n is %d\n", n)
case 4, 5:
fmt.Printf("case 4, 5: n is %d\n", n)
default:
fmt.Printf("default: n is %d\n", n)
}
}
Go
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