ref: 8bd18e2d1caef67781ae69d761bdfca8d2bcf41d
dir: /test/matchunion_sl.myr/
use std /* checks pattern matching on unions with arguments. exits with 42. */ type u = union `Int int `Str byte[:] `Nil ;; const main = { var v v = `Str "foo" match v | `Int 127: -> 42 | `Str s: std.put("%s\n", s) | `Nil: ;; -> 0 }