ref: 5d521c36533ee6f834b9dcad90e23feb5f90a680
dir: /test/matchunion.myr/
use std
/* checks that union matching works, at least on the key.
exits with 84. */
type u = union
`Foo
`Bar
`Baz
`Quux
;;
const main = {
var v
v = `Foo
match v
| `Bar: std.exit(42)
| `Baz: std.exit(81)
| `Foo: std.exit(84)
| `Quux: std.exit(123)
;;
}