ref: a7fc1a49cbc6b97a2a227c76a833c6f4cd827cf4
dir: /libbio/test/bio-create.myr/
use std
use bio
const main = {
var f
std.mkdir("tmpout", 0o755);
match bio.create("tmpout/test-create", bio.Wr, 0o644)
| `std.Some bio: f = bio
| `std.None: std.fatal(1, "Failed to open file\n")
;;
bio.close(f)
}