How to check if a byte slice starts with a specific prefix in Go using the bytes package?

To check if a byte slice starts with a specific prefix using the bytes package in Go, you can use the HasPrefix() function. Here's an example:

package main

import (
	"bytes"
	"fmt"
)

func main() {
	byteSlice := []byte{0x01, 0x02, 0x03, 0x04}
	prefix := []byte{0x01, 0x02}

	if bytes.HasPrefix(byteSlice, prefix) {
		fmt.Println("Byte slice starts with the specified prefix")
	} else {
		fmt.Println("Byte slice does not start with the specified prefix")
	}
}

In this example, we have a byte slice byteSlice and a prefix prefix. We use the bytes.HasPrefix() function to check if byteSlice starts with prefix. If it does, the output will be "Byte slice starts with the specified prefix". Otherwise, the output will be "Byte slice does not start with the specified prefix".