base64 in golang

package main

import (
  "encoding/base64";
  "bytes";
  "fmt";
)

func main() {
  // create the buffer
  bb := &bytes.Buffer{};
  bbURL := &bytes.Buffer{};

  // create two base64 encoder (standard and for url)
  encoder := base64.NewEncoder(base64.StdEncoding, bb);
  encoderURL := base64.NewEncoder(base64.URLEncoding, bbURL);

  data := "hallo this is a test, a=23&var2=blabla+-?!%$/\\";
  fmt.Println("data       : ", data);

  // to encode data, use Write([]bytes),
  // therefore you must convert string to bytes 
  // with string.Bytes(d string)
  encoder.Write([]byte(data));
  encoder.Close();

  encoderURL.Write([]byte(data));
  encoderURL.Close();

  // voila
  fmt.Println("encoded Std: ", bb.String());
  fmt.Println("encoded URL: ", bbURL.String());
}