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// Copyright 2011 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.
package rand_test
import (
"bytes"
"crypto/rand"
"fmt"
)
// This example reads 10 cryptographically secure pseudorandom numbers from
// rand.Reader and writes them to a byte slice.
func ExampleRead() {
c := 10
b := make([]byte, c)
_, err := rand.Read(b)
if err != nil {
fmt.Println("error:", err)
return
}
// The slice should now contain random bytes instead of only zeroes.
fmt.Println(bytes.Equal(b, make([]byte, c)))
// Output:
// false
}