在golang中遍历结构而不反射

Question

I have a struct like this

import (
        "fmt"
)

type Node struct {
        m []string
        o []string
}

func main() {

        var mm = []string{"abc", "def"}
        var oo = []string{"111", "222"}

        var v = Node{m: mm, o: oo}

        for _, d := range []interface{}{v.m, v.o} {
                fmt.Println(d)
        }

}

The output I get is,

[abc def]
[111 222]

My desired output is,

abc,111
def,222

I don't want to use reflect package because, I want to use native go built-ins as much as possible. If it becomes too burdensome I will fall back on reflect package.

Answer 1

Edit: I just realized my output doesn't match yours, do you want the letters paired with the numbers? If so then you'll need to re-work what you have.

You can use strings.Join and a type switch statement to accomplish this:

https://play.golang.org/p/ygtdxv02uK

package main

import (
    "fmt"
    "strings"
)

type Node struct {
    m []string
    o []string
    p []int
}

func main() {

    var mm = []string{"abc", "def"}
    var oo = []string{"111", "222"}
    var pp = []int{1, 2, 3}

    var v = Node{m: mm, o: oo, p: pp}

    for _, d := range []interface{}{v.m, v.o, v.p} {
        switch d.(type) {
        case []string:
            fmt.Println(strings.Join(d.([]string), ","))
        default:
            fmt.Println(d)
        }
    }

}

The output is:

abc,def
111,222
[1 2 3]