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Please excuse my newness to the language. I found this example of encoding to bytes and then it out puts using fmt.Printf, but how instead do I store the string representation of this example in a variable?

src := []byte("Hello Gopher!")

dst := make([]byte, hex.EncodedLen(len(src)))
hex.Encode(dst, src)

fmt.Printf("%s\n", dst) // output: 48656c6c6f20476f7068657221 (how do I get this output rather in a variable?

I want to set dst in a variable to be used later in the code instead of printing it out.

EDIT The original question was marked as a duplicate to this: Format a Go string without printing?

However, the answers in there seem to only refer to formatting that of a string using Sprintf and in this question I am trying to figure out how to format a hex which was encoded from byte but the example is printed out in fmt.Printf using %s. But I would like to format to use in a variable which can be reused in the code in later parts. So I dont think this is a duplicate of marked reason, as that deals with formatting a string, not a hex from byte

Chipe
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  • If your goal is to use %s to create a string variable, then use Sprintf as in the duplicate question: `s := fmt.Sprintf("%s", dst)`. You can also use `s := string(dst)`. – Charlie Tumahai Jan 08 '19 at 04:06
  • @ThunderCat: "If your goal ..." That wasn't the goal. See my answer. – peterSO Jan 08 '19 at 04:19

1 Answers1

2

For example,

package main

import (
    "encoding/hex"
    "fmt"
)

func main() {
    str := "Hello Gopher!"
    fmt.Println(str)
    src := []byte(str)
    fmt.Println(src)
    dst := hex.EncodeToString(src)
    fmt.Println(dst)
}

Playground: https://play.golang.org/p/qwT_cGpWoYb

Output:

Hello Gopher!
[72 101 108 108 111 32 71 111 112 104 101 114 33]
48656c6c6f20476f7068657221
peterSO
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    Wonderful! Thanks so much. I was looking for what you just posted: `dst := hex.EncodeToString(src)`. Thanks so much! I couldnt find this in any of my searching, so thanks for the reply! – Chipe Jan 08 '19 at 03:49