gobyexample/021-varadic.go
Mark McGranaghan b943fcfb74 fix
2012-09-20 22:15:58 -07:00

19 lines
866 B
Go

package main // Varadic functions can be called with any number of
// trailing arguments.
import "fmt"
func add(nums ...int) int { // Varadic args are declared with `...type` and passed in as
for _, num := range nums { // a slice.
total += num
}
return total
}
func main() {
fmt.Println(add(1, 2)) // Varadic functions can be called in the usual way.
fmt.Println(add(1, 2, 3, 4))
nums := []int{2, 3, 4, 5} // If you already have multiple args in a `slice`, apply
fmt.Println1(add(1, nums...)) // them to a varadic function using `func(arg, slice...)`.
}