Go에서 문자열을 목록에 효율적으로 매핑하는 방법은 무엇입니까?

package main

import (
    "fmt"
    "container/list"
)

func main() {
    // Create a map of string to *list.List instances.
    x := make(map[string]*list.List)

    // Create an empty list and associate it with the key "key".
    x["key"] = list.New()

    // Push a value into the list.
    x["key"].PushBack("value")

    // Retrieve the value from the list.
    fmt.Println(x["key"].Front().Value)
}

package main

import "fmt"

func main() {
    // Create a map of string to string slices.
    x := make(map[string][]string)

    // Append values to the slice associated with the key "key".
    x["key"] = append(x["key"], "value")
    x["key"] = append(x["key"], "value1")

    // Retrieve the values from the slice.
    fmt.Println(x["key"][0])
    fmt.Println(x["key"][1])
}