Go language function of the variable parameters

package main
//.... 加参数类型 
func Sum(nums ...int)int{

    total:=0
    for _,num:=range  nums{
        total+=num
    }
    return total
}
func main(){
    // Providing four arguments
    total :=Sum(1,2,3,4)
    println("The Sum is:",total)

    // Providing three arguments
    total = Sum(5, 7, 8)
    println("The Sum is:",total)

    nums:= []int{1,2,3,4,5} //slice
    total = Sum(nums...)   //通过...类似python中的解包
    println("The Sum is",total)

}