How to find the index of the first occurrence of a specific byte in a byte slice using the bytes package in Go?

To find the index of the first occurrence of a specific byte in a byte slice using the bytes package in Go, you can use the bytes.IndexByte() function. Here's an example:

package main

import (
	"bytes"
	"fmt"
)

func main() {
	// Create a byte slice to search for the index
	byteSlice := []byte{10, 20, 30, 40, 50, 60, 70, 80, 90}

	// Find the index of the first occurrence of the byte 40
	index := bytes.IndexByte(byteSlice, 40)

	if index != -1 {
		fmt.Printf("Index: %d\n", index)
	} else {
		fmt.Println("Byte not found in the slice")
	}
}

In this example, byteSlice is the byte slice in which we want to search for the index. We use the bytes.IndexByte(byteSlice, 40) function to find the index of the first occurrence of the byte 40.

The bytes.IndexByte() function returns the index if the byte is found, and -1 if the byte is not found. You can then use this index for further processing or validation.