ref: 2002d2fa999d7efeb71aa64a32a1a87c2f4b8399
dir: /lib/bio/test/bio-unitwr.myr/
use std use bio const main = { var f std.mkpath("tmpout") match bio.create("tmpout/test-unitwr", bio.Wr, 0o644) | `std.Ok bio: f = bio | `std.Err m: std.fatal("Unable to open data file: {}\n", m) ;; bio.putb(f, 42) bio.putc(f, 'ה') bio.putb(f, 0xa) bio.close(f); }