golang example_test 代码
文件路径：/src/crypto/rand/example_test.go
/ 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
}