How to calculate the dimensionality of an array in Go

arraydepth.go

func ArrayDepth(i interface{}) int {
	return arrayDepth(i, 0)
}

func arrayDepth(i interface{}, n int) int {
	kind := reflect.ValueOf(i).Kind()
	if kind == reflect.Array || kind == reflect.Slice {
		n += 1
		j := i.([]interface{})
		return arrayDepth(j[0], n)
	}
	return n
}