ref: a7d1902c56da54a4bc3891413bd3029c6ea7a7f9
dir: /lib/std/writeall.myr/
use "errno"
use "result"
use "option"
use "syswrap"
use "types"
pkg std =
const writeall : (fd : fd, src : byte[:] -> (size, option(errno)))
;;
const writeall = {fd, src
var sz
sz = src.len
while src.len != 0
match std.write(fd, src)
| `Ok n:
src = src[n:]
| `Err e:
-> (sz - src.len, `Some e)
;;
;;
-> (sz, `None)
}