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

Besides the methods mentioned above, you can also do a trick as

s := "hello"
b := *(*[]byte)(unsafe.Pointer((*reflect.SliceHeader)(unsafe.Pointer(&s))))

Go Play: http://play.golang.org/p/xASsiSpQmC

You should never use this :-)