ref: df3dc5078c090ea2d9cef6c33cf157975d29bd4f
dir: /test/matchbind.myr/
type u = union
`Int int
`Chr char
`Nil
;;
const main = {
var v
v = `Int 11
match v
`Int 127:
-> 42
;;
`Int x:
-> x
;;
`Chr 'a':
-> 4
;;
`Nil:
-> 6
;;
;;
}