34 lines
820 B
Go
34 lines
820 B
Go
package main
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import (
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"fmt"
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"time"
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)
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// built-in timer and ticker features
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func main() {
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// timers represent a single event in the future
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// tell the timer how long to wait and it provides a channel that will be notified at that time
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timer1 := time.NewTimer(2 * time.Second)
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// <-timer1.C blocks on the timer’s channel C until it sends a value indicating that the timer fired
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<-timer1.C
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fmt.Println("Timer 1 fired")
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// to wait, you could have used time.Sleep
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timer2 := time.NewTimer(time.Second)
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go func() {
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<-timer2.C
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fmt.Println("Timer 2 fired")
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}()
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// one can cancel the timer before it fires
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stop2 := timer2.Stop()
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if stop2 {
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fmt.Println("Timer 2 stopped")
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}
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// give the timer2 enough time to fire, if it ever was going to, to show it is in fact stopped
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time.Sleep(2 * time.Second)
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}
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