| package main | |
| import ( | |
| "fmt" | |
| "time" | |
| ) | |
| func main() { | |
| tick := time.Tick(100 * time.Millisecond) | |
| boom := time.After(500 * time.Millisecond) | |
| for { | |
| select { | |
| case <-tick: | |
| fmt.Println("tick.") | |
| case <-boom: | |
| fmt.Println("BOOM!") | |
| return | |
| default: | |
| fmt.Println(" .") | |
| time.Sleep(50 * time.Millisecond) | |
| } | |
| } | |
| } |