Learn X By Example
Learn X By Example

    Go by Example: Multiple Return Values

    Go by Example : Multiple Return Values

    Go has built-in support for multiple return values . This feature is used often in idiomatic Go, for example to return both result and error values from a function.

    package main
    import "fmt"

    The (int, int) in this function signature shows that the function returns 2 int s.

    func vals() (int, int) {
    return 3, 7
}
    func main() {

    Here we use the 2 different return values from the call with multiple assignment .

        a, b := vals()
    fmt.Println(a)
    fmt.Println(b)

    If you only want a subset of the returned values, use the blank identifier _ .

        _, c := vals()
    fmt.Println(c)
}
    $ go run multiple-return-values.go
3
7
7

    Accepting a variable number of arguments is another nice feature of Go functions; we’ll look at this next.

    Next example: Variadic Functions .

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