assign.go

package main

func main() {
	// Two new vars, with :=.
	x, y := returns_one_and_two()
	print("x = ", x, "\n") // 1
	print("y = ", y, "\n") // 2

	// One of the vars is new, use := for both.
	y, z := returns_one_and_two()
	print("y = ", y, "\n") // 1
	print("z = ", z, "\n") // 2

	for i := 0; i < 2; i++ {
		print("outer z = ", z, "\n") // 2
		// One of the vars is new, use := for both.
		z, w := returns_one_and_two()
		print("inner z = ", z, "\n") // 1
		print("w = ", w, "\n") // 2
	}

	// Now you expect z to be 1, but that was the inner z.  This
	// is the outer z, which is still 2.
	print("outer z = ", z, "\n") // 2
}

func returns_one_and_two() (int, int) {
	return 1, 2
}