Golang — time. After

Time. After can be used to do something After a certain time delay,

package main 

import "fmt"
import "time"

func main(){
	for {
		select {
			case <- time.After(1000*time.Millisecond):
				fmt.Println("hello")
		}
	}
}
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Each call to time.after generates a new timer and writes chan After duration, which is read in SELECT to delay execution. Output:

hello
hello
hello
hello
hello
hello
hello
hello
hello
......

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