How do I convert a hex string to a byte slice in Go?

Transferring Hex Strings to []byte in Go

Converting a hex string into a slice of bytes []byte can be easily achieved in Go using the hex.DecodeString() function. This function takes a hex string representation as a parameter and returns a byte slice containing the decoded bytes corresponding to the hex characters.

Example:

Consider the following example where we want to convert the hex string "46447381" into a byte slice:

package main

import (
    "fmt"
    "encoding/hex"
)

func main() {
    s := "46447381"

    data, err := hex.DecodeString(s)
    if err != nil {
        panic(err)
    }

    fmt.Printf("%x", data)
}

Explanation:

• Import the encoding/hex package.
• Decode the hex string using DecodeString() and store the result in the data variable.
• Print the data slice in hexadecimal format using fmt.Printf("%x", data).

Output:

46447381

Note:

It's important to note that when printing the byte slice directly using fmt.Println(data), the output will be in decimal format. To print the bytes in hexadecimal format, you should use fmt.Printf("%x", data) instead.

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