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 }
Go’s return values may be named. If so, they are treated as variables defined at the top of the function. A `return“ statement without arguments returns the named return values. This is known as a “naked” return.	func split(sum int) (x, y int) { x = sum * 4 / 9 y = sum - x return }
	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)
The split function will return the values of x & y	d, e := split(17) fmt.Println(d, e) }

	$ go run multiple-return-values.go 3 7 7 7 10
Naked return statements should be used only in short functions. They can harm readability in longer functions.
Accepting a variable number of arguments is another nice feature of Go functions; we’ll look at this next.