package main
import (
  "fmt"
)

func main() {
    m := make(map[int]string)

    m[1] = "a"
    m[2] = "b"
    m[3] = "c"
    m[4] = "d"

    // Can this be done better?
    v := make([]string,len(m),len(m))
    idx := 0
    for  _,value := range m {
       v[idx] = value
       idx++
    }

    fmt.Println(v)
 }

是否有地图的内置功能？在Go包中有一个函数，或者这是最好的代码，如果我要做？