ref: f1ea96e3b500fdd088c8c89889d5daec2cbcb3dc
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) }