32 lines
780 B
Go
32 lines
780 B
Go
// Varadic functions can be called with any number of
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// trailing arguments. This is useful if you don't know
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// number of arguments that will be needed for a function
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// ahead of time.
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package main
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import "fmt"
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// Varadic args are declared with `...type` and
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// passed in as a slice.
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func add(nums ...int) 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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return total
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}
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func main() {
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// Varadic functions can be called in the usual way.
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fmt.Println(add(1, 2))
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fmt.Println(add(1, 2, 3))
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// If you already have multiple args in a slice,
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// apply them to a varadic function using `
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// func(slice...)`.
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nums := []int{1, 2, 3, 4}
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fmt.Println(add(nums...))
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}
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