28 lines
952 B
Go
28 lines
952 B
Go
package main // Varadic functions can be called with any number of
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// trailing arguments.
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import "fmt"
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func add(nums ...int) int { // Varadic args are declared with `...type` and
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fmt.Print(nums, " ") // passed in as a slice.
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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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return total
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}
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func main() {
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fmt.Println(add(1, 2)) // Varadic functions can be called in the usual way.
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fmt.Println(add(1, 2, 3))
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nums := []int{1, 2, 3, 4} // If you already have multiple args in a slice,
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fmt.Println(add(nums...)) // apply them to a varadic function using `
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} // func(slice...)`.
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/*
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$ go run varadic.go
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[1 2] 3
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[1 2 3] 6
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[1 2 3 4] 10
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*/
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