golang time.Duration() 问题

package main
import "time"
func main(){
    connectTimeout := 10
    time.Sleep(time.Second*connectTimeout)
}

int and time.Duration are different types. You need to convert the int to a time.Duration 

connectTimeout := 10
time.Sleep(time.Duration(connectTimeout) * time.Second)

time.Sleep(1 * time.Second)    //可以
time.Sleep(1.1 * time.Second) //不可以
time.Sleep(time.Duration(yourTime) * time.Second) //可以
time.Sleep(yourTime * time.Second)                            //不可以