A go equivalent of clojure's get-in function. Query a nested map with a list of keys

get-in.go

package main

import (
	"fmt"
)

func getIn(i interface{}, keys []string) interface{} {
    if len(keys) == 0 {
        return i
    }

    if m, ok := i.(map[string]interface{}); ok {
        return getIn(m[keys[0]], keys[1:])
    }

    return nil
}

func main() {
	m := map[string]interface{}{
		"A": map[string]interface{}{
			"B": map[string]interface{}{
				"C": 1,
			},
		},
	}

	fmt.Println(m)
	fmt.Println(getIn(m, []string{"A"}))
	fmt.Println(getIn(m, []string{"A", "B"}))
	fmt.Println(getIn(m, []string{"A", "B", "C"}))
}