1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package rand_test
6
7import (
8	"bytes"
9	"crypto/rand"
10	"fmt"
11)
12
13// This example reads 10 cryptographically secure pseudorandom numbers from
14// rand.Reader and writes them to a byte slice.
15func ExampleRead() {
16	c := 10
17	b := make([]byte, c)
18	_, err := rand.Read(b)
19	if err != nil {
20		fmt.Println("error:", err)
21		return
22	}
23	// The slice should now contain random bytes instead of only zeroes.
24	fmt.Println(bytes.Equal(b, make([]byte, c)))
25
26	// Output:
27	// false
28}
29