我遇到了一個問題，即返回的整數值與一組相同，即使在 go 子例程中更新了值之后也是如此。我似乎無法弄清楚出了什么問題。//HostUptimeReporter - structtype HostUptimeReporter struct {    updateInterval int    uptime int    shutdownSignal chan bool}//NewHostUpTimeReporter - create reporter instancefunc NewHostUpTimeReporter(updateIntervalInSeconds int) HostUptimeReporter {    instance := HostUptimeReporter{updateInterval: updateIntervalInSeconds, shutdownSignal: make(chan bool), uptime:59}    ticker := time.NewTicker(time.Duration(updateIntervalInSeconds) * time.Second)    go func() {        for {            select {            case <-ticker.C:                instance.uptime += updateIntervalInSeconds                          fmt.Printf("updated uptime:%v\n", instance.uptime)            case <-instance.shutdownSignal:                ticker.Stop()                return            }        }    }()    return instance}//Shutdown - shuts down the go routinefunc (hupr *HostUptimeReporter) Shutdown(){    hupr.shutdownSignal <- true}func main() {    hurp := NewHostUpTimeReporter(2)    defer hurp.Shutdown()    fmt.Printf("current uptime:%v\n", hurp.uptime)    time.Sleep(3*time.Second)    fmt.Printf("new uptime:%v\n", hurp.uptime)}https://play.golang.org/p/ODjSBb0YugK任何指針表示贊賞。