golang encoding/json

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
)

type ColorGroup struct {
    ID     int
    Name   string
    Colors []string
}

func main() {

    //---------------Marshal
    group := ColorGroup{
        ID:     1,
        Name:   "Reds",
        Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
    }
    b, err := json.Marshal(group)
    if err != nil {
        fmt.Println("error:", err)
    }
    //os.Stdout.Write(b)
    fmt.Println(string(b[:]))

    //---------------Unmarshal
    var jsonBlob = []byte(`[
            {"ID":1,"Name":"Reds1","Colors":["Crimson","Red1","Ruby1","Maroon1"]},
            {"ID":2,"Name":"Reds2","Colors":["Crimson","Red2","Ruby2","Maroon2"]},
            {"ID":3,"Name":"Reds3","Colors":["Crimson","Red3","Ruby3","Maroon3"]}
        ]`)

    var animals []ColorGroup
    error := json.Unmarshal(jsonBlob, &animals)
    if error != nil {
        fmt.Println("error:", error)
    }

    //fmt.Printf("%+v", animals)
    //fmt.Println(animals)
    for i, x := range animals {
        fmt.Println(i, x)

    }
    //---------------Indent
    dst := new(bytes.Buffer)
    json.Indent(dst, jsonBlob, "##", "**")
    fmt.Println(dst)
}