Master Golang: Variadic Functions

Variadic functions can be called with any number of trailing arguments. For example, `fmt.Println` is a common variadic function.
	package main
	import "fmt"
Here’s a function that will take an arbitrary number of `int`s as arguments.	func sum(nums ...int) { fmt.Print(nums, " ") total := 0
Within the function, the type of `nums` is equivalent to `[]int`. We can call `len(nums)`, iterate over it with `range`, etc.	for _, num := range nums { total += num } fmt.Println(total) }
	func main() {
Variadic functions can be called in the usual way with individual arguments.	sum(1, 2) sum(1, 2, 3)
If you already have multiple args in a slice, apply them to a variadic function using `func(slice...)` like this.	nums := []int{1, 2, 3, 4} sum(nums...) }

	$ go run variadic-functions.go [1 2] 3 [1 2 3] 6 [1 2 3 4] 10
Another key aspect of functions in Go is their ability to form closures, which we’ll look at next.

Next example: Closures.