如何在golang中将字符串递归连接到类型为string的数组

Question

I am struggling with this for quite some time. I basically want to create a function that recursively join a string to an array.

Like this :

join ", " ["one","two","three"] should look like this "one, two, three"

Answer 1

Something like this

package main

import (
    "fmt"
    "strings"
)

func flatJoin(sep string, args ...interface{}) string {
    values := make([]string, 0)
    for _, item := range args {
        switch v := item.(type) {
        case string:
            values = append(values, v)

        case []string:
            values = append(values, v...)
        case fmt.Stringer:
            values = append(values, v.String())
        default:
            values = append(values, fmt.Sprintf("%v", v))
        }
    }

    return strings.Join(values, sep)

}

func main() {
    fmt.Println(flatJoin(", ", "basic", "other", []string{"here", "more", "inner"}))
}

http://play.golang.org/p/yY6YnZZAak

This supports only one level of flattening, but you can customize the recursion on your switch statement depending on what you are expecting.