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Source file src/crypto/rand/example_test.go

Documentation: crypto/rand

  // 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
  }
  

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