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How to convert a string to a byte slice in Golang?

Given a string, we have to convert the given string to a byte slice using syscall in Golang.
Submitted by IncludeHelp, on November 12, 2021 [Last updated : March 05, 2023]

Converting a string to a byte slice in Golang

In the Go language, to convert a string to a byte slice – we use the ByteSliceFromString() function of the syscall package. The ByteSliceFromString() function returns a NUL-terminated slice of bytes containing the text of s. If s contains a NUL byte at any location, it returns (nil, EINVAL).

Syntax

func ByteSliceFromString(s string) ([]byte, error)

Consider the below example demonstrating how to convert a string to a byte slice in Golang?

Golang code to convert a string to a byte slice

package main

import (
	"fmt"
	"syscall"
)

func main() {
	str := "Hello, World!"

	// Converting string to byte slice
	ByteSlice, Err := syscall.ByteSliceFromString(str)

	// Printing the type and value
	fmt.Printf("ByteSlice: %T, %v\n", ByteSlice, ByteSlice)

	// Printing the ERR
	fmt.Printf("Err: %v\n", Err)
}

Output

ByteSlice: []uint8, [72 101 108 108 111 44 32 87 111 114 108 100 33 0]
Err: <nil>