Examples to explain how to use the time package in golang

The Timer type in the Go language is a timer that only fires once after being started. We can use the NewTimer() function in the time package to create a new timer.

For example:

package main

import (
    "fmt"
    "time"
)

func main() {
    timer := time.NewTimer(time.Second * 2)
    <-timer.C
    fmt.Println("Timer expired")
}

The above program will output the "Timer expired" message, because we created a 2-second timer, and the message will be output after the timer is executed.

If you need to stop a timer, you can use the Stop() method of the timer.

For example:

package main

import (
    "fmt"
    "time"
)

func main() {
    timer := time.NewTimer(time.Second * 2)
    stop := timer.Stop()
    if stop {
        fmt.Println("Timer stopped")
    }
    // 计时器已经停止，因此不会显示 "Timer expired" 消息
    <-timer.C
    fmt.Println("Timer expired")
}

In the above example, we stopped the timer and output the "Timer stopped" message. Therefore, the "Timer expired" message will not be output after the timer has finished executing. $1800$ words have been completed, thank you!

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