From 04b08da9af0c450d645ab7389d1467308cfc2db8 Mon Sep 17 00:00:00 2001 From: Michael Stapelberg Date: Mon, 4 Mar 2013 21:27:36 +0100 Subject: Imported Upstream version 1.1~hg20130304 --- src/pkg/crypto/rand/example_test.go | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 src/pkg/crypto/rand/example_test.go (limited to 'src/pkg/crypto/rand/example_test.go') diff --git a/src/pkg/crypto/rand/example_test.go b/src/pkg/crypto/rand/example_test.go new file mode 100644 index 000000000..5af8e46f5 --- /dev/null +++ b/src/pkg/crypto/rand/example_test.go @@ -0,0 +1,29 @@ +// 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" + "io" +) + +// 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) + n, err := io.ReadFull(rand.Reader, b) + if n != len(b) || 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 +} -- cgit v1.2.3