golang一行程式碼計算函式執行時間
import(
"fmt"
"time"
)
func main(){
defer timeCost(time.Now())
fmt.Println("start program")
time.Sleep(5*time.Second)
fmt.Println("finish program")
}
func timeCost(start time.Time){
terminal:=time.Since(start)
fmt.Println(terminal)
}