// Copyright 2012 The Go Authors.  All rights reserved.// Use of this source code is governed by a BSD-style// license that can be found in the LICENSE file. // Keep in sync with ../base32/example_test.go. package base64_test import (	"encoding/base64"	"fmt"	"os") func Example() {	msg := "Hello, 世界"	encoded := base64.StdEncoding.EncodeToString([]byte(msg))	fmt.Println(encoded)	decoded, err := base64.StdEncoding.DecodeString(encoded)	if err != nil {		fmt.Println("decode error:", err)		return	}	fmt.Println(string(decoded))	// Output:	// SGVsbG8sIOS4lueVjA==	// Hello, 世界} func ExampleEncoding_EncodeToString() {	data := []byte("any + old & data")	str := base64.StdEncoding.EncodeToString(data)	fmt.Println(str)	// Output:	// YW55ICsgb2xkICYgZGF0YQ==} func ExampleEncoding_DecodeString() {	str := "c29tZSBkYXRhIHdpdGggACBhbmQg77u/"	data, err := base64.StdEncoding.DecodeString(str)	if err != nil {		fmt.Println("error:", err)		return	}	fmt.Printf("%q\n", data)	// Output:	// "some data with \x00 and \ufeff"} func ExampleNewEncoder() {	input := []byte("foo\x00bar")	encoder := base64.NewEncoder(base64.StdEncoding, os.Stdout)	encoder.Write(input)	// Must close the encoder when finished to flush any partial blocks.	// If you comment out the following line, the last partial block "r"	// won't be encoded.	encoder.Close()	// Output:	// Zm9vAGJhcg==}