ref: 27d6ae05d6408b4b2c9fb6b58799f503ddb1b6d6 dir: /test/matchmixed.myr/
use std type u = union `A `B ;; const main = { match "asdf" `A: std.put("Got a\n");; `B: std.put("Got b\n");; ;; -> 42 }