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.

		err := binary.Write(buf, binary.LittleEndian, v)
		if err != nil {
			fmt.Println("binary.Write failed:", err)
		}
	}
	fmt.Printf("%x", buf.Bytes())
	// Output: beefcafe
}

func ExampleRead() {
	var pi float64
	b := []byte{0x18, 0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40}
	buf := bytes.NewReader(b)
	err := binary.Read(buf, binary.LittleEndian, &pi)
	if err != nil {
		fmt.Println("binary.Read failed:", err)