How to assign string to bytes array

Question

I want to assign string to bytes array:

var arr [20]byte
str := \"abc\"
for k, v := range []byte(str) {
  arr[k] = byte(v)
}

Have another m

Answer 1

Ended up creating array specific methods to do this. Much like the encoding/binary package with specific methods for each int type. For example binary.BigEndian.PutUint16([]byte, uint16).

func byte16PutString(s string) [16]byte {
    var a [16]byte
    if len(s) > 16 {
        copy(a[:], s)
    } else {
        copy(a[16-len(s):], s)
    }
    return a
}

var b [16]byte
b = byte16PutString("abc")
fmt.Printf("%v\n", b)

Output:

[0 0 0 0 0 0 0 0 0 0 0 0 0 97 98 99]

Notice how I wanted padding on the left, not the right.

http://play.golang.org/p/7tNumnJaiN