From a7f34e69cd94b09e85053ad0ed920b51b5be52f3 Mon Sep 17 00:00:00 2001 From: Yves Junqueira Date: Sat, 22 Sep 2012 05:54:33 +1000 Subject: [PATCH] [release-branch.go1] crypto/rand: Example for Read. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit ««« backport 4738fd47e7a9 crypto/rand: Example for Read. R=adg, remyoudompheng, rsc, r CC=golang-dev https://golang.org/cl/6457085 »»» --- src/pkg/crypto/rand/example_test.go | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 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 0000000000..5af8e46f5d --- /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 +} -- 2.50.0