ref: 5f5b3c226cdea602baa23cf346ec2f3f367d81ee
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)
}