ref -> val

f.pony

actor Main
  new create(env : Env) =>
    var a : Array[String] ref = [ "a", "b", "c" ]
    var b : Array[String] trn = recover Array[String] end
    b.push("foo") ; b.push("bar") ; b.push("baz")
    for i in a.values() do
      b.push(i)
    end
    let c : Array[String] val = consume b
    for i in c.values() do
      env.out.print("Got: " + i)
    end