How to append data to a byte slice using the bytes package in Go?

To append data to a byte slice using the bytes package in Go, you can follow these steps:

Import the bytes package:

import "bytes"

Create a byte slice:

var data []byte

Use the bytes package's Append() function to append data to the byte slice:

data = bytes.Append(data, []byte("Hello, "))
data = bytes.Append(data, []byte("world!"))

Print the byte slice to see the appended data:

fmt.Println(string(data))

The complete code snippet will look like this:

package main

import (
	"bytes"
	"fmt"
)

func main() {
	var data []byte
	data = bytes.Append(data, []byte("Hello, "))
	data = bytes.Append(data, []byte("world!"))

	fmt.Println(string(data))
}

When you run this code, it will print "Hello, world!".