import Prim "mo:⛔";
actor a {
  public func transpose (data : [(Int,Text)]) : async {ints: [Int]; txts: [Text]} {
    return {
      ints = Prim.Array_tabulate<Int>(data.size(), func (i:Nat) : Int = (data[i].0));
      txts = Prim.Array_tabulate<Text>(data.size(), func (i:Nat) : Text = (data[i].1))
    }
  };

  public func go() : async () {
    let x = await a.transpose([(1,"Hi"), (2, "Ho")]);
    assert (x.ints[0] == 1);
    assert (x.ints[1] == 2);
    assert (x.txts[0] == "Hi");
    assert (x.txts[1] == "Ho");
    Prim.debugPrint("All good");
  }
};
a.go(); //OR-CALL ingress go "DIDL\x00\x00"