[Go] Decode and encode JSON

JSON.go

package main

import (
  Fmt "fmt"
  Str "strings"
  Bytes "bytes"
  JSON "encoding/json"
)

// Our JSON string to decode
const JSONStr = `{ "Name": "Jhon Doe", "Age": 35 }`

func main() {
  // Our object where to store the decoded JSON
  var obj map[string]interface{}
  // Our buffer where to store the encoded JSON
  var buf Bytes.Buffer

  // The io.Reader needed by the JSON decoder
  var read = Str.NewReader(JSONStr)
  // Creates the decoder
  var dec  = JSON.NewDecoder(read)
  // Creates the encoder
  var enc  = JSON.NewEncoder(&buf)

  // Decodes the JSON
  err := dec.Decode(&obj)
  if err != nil { panic(err) }

  Fmt.Printf("Decoded JSON (%T): %v\n", obj, obj)

  // We just set some keys
  obj["Company"] = "Some Company, Inc."
  obj["Github"] = "https://github.com/JhonDoe"
  obj["Repos"] = []string {
    "https://github.com/JhonDoe/AwesomeRepo1",
    "https://github.com/JhonDoe/AwesomeRepo2",
    "https://github.com/JhonDoe/AwesomeRepo3",
  }

  // Encodes the new modified JSON
  err = enc.Encode(&obj)
  if err != nil { panic(err) }

  // An the result is:
  Fmt.Printf("Encoded JSON (%T): %v\n", obj, obj)
  // If you want an string output, just cast ;)
  Fmt.Printf("Encoded JSON (%T): %v\n", buf.Bytes(), buf.Bytes())
}