How Can Strings Be Efficiently Converted to Byte Arrays in Go?

Accessing String Values as Bytes

Assigning a string to a byte array allows for low-level data manipulation and manipulation of binary data. One method for achieving this is utilizing a loop to iterate through the range of bytes in the string, assigning each byte to an equivalent index in the byte array.

package main

import (
    "fmt"
)

func main() {
    var arr [20]byte
    str := "abc"

    // Iterate through bytes and assign to byte array
    for k, v := range []byte(str) {
        arr[k] = byte(v)
    }

    // Display the values in the byte array
    fmt.Println(arr)
}

An alternative, more concise and secure approach is to use type conversion:

[]byte("Here is a string....")

This method automatically converts the string into a slice of bytes, eliminating the need for the loop and type conversion in the previous example.

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