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34 lines
728 B
Go
34 lines
728 B
Go
// [_Variadic functions_](http://en.wikipedia.org/wiki/Variadic_function)
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// can be called with any number of trailing arguments.
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// For example, `fmt.Println` is a common variadic
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// function.
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package main
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import "fmt"
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// Here's a function that will take an arbitrary number
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// of `int`s as arguments.
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func sum(nums ...int) {
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fmt.Print(nums, " ")
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total := 0
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for _, num := range nums {
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total += num
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}
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fmt.Println(total)
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}
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func main() {
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// Variadic functions can be called in the usual way
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// with individual arguments.
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sum(1, 2)
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sum(1, 2, 3)
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// If you already have multiple args in a slice,
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// apply them to a variadic function using
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// `func(slice...)` like this.
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nums := []int{1, 2, 3, 4}
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sum(nums...)
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}
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