03-switch.go

package main

import (
   "fmt"
   "time"
)

func main() {
   fmt.Println("When's Saturday?")
   today := time.Now().Weekday()
   switch time.Saturday {
   case today+0:
      fmt.Println("Today.")
   case today+1:
      fmt.Println("Tomorrow.")
   case today+2:
      fmt.Println("In two days.")
   default:
      fmt.Println("Too far away.")
   }

   t := time.Now()
   switch {
   case t.Hour() < 12:
      fmt.Println("Good morning!")
   case t.Hour() < 17:
      fmt.Println("Good afternoon.")
   default:
      fmt.Println("Good evening.")
   }
}