newbie: string to byte array

[Thomas Kaufmann]

Hi,

how can I convert a string in a byte array?

o-o

Thomas

[Rob 'Commander' Pike]

On Thu, Dec 9, 2010 at 7:57 AM, Thomas Kaufmann <tok...@googlemail.com> wrote:
> Hi,
>
> how can I convert a string in a byte array?

By converting a string [to] a byte array:

[]byte("string")

-rob

[Andrew Gerrand]

To expand a little: this is how type conversions work more generally in Go.

To convert variable v to type T, you would do:
T(v)

So, to do the reverse of Rob's example, you can convert the []byte b
to a string like so:
string(b)

Andrew

[jimt]

Incidentally, this also works for fetching unicode runes from a string
and in reverse:

runes := []int("foo")
str := string(runes)

[fixe...@gmail.com]

Quick point of clarificaton (for my own understanding): This converts the string to a byte slice, right? Converting to a byte array would imply that the length of the array were statically fixed at compile time, and there's no way to statically guarantee the string has a particular length.

(This is still almost certainly the right thing to do; I just want to confirm I'm not misunderstanding the typing rules in this context).

[91ash...@gmail.com]

Thanks 

[Roberto Zanotto]

Yes, this converts the string to a byte slice. If you need a byte array and you know the length of the string at compile time (or an upper bound), you can use copy:
https://play.golang.org/p/yuSjpVu4tl