15 struct MoveOnly {  struct
17     MoveOnly(MoveOnly const&) = delete;  argument
18     MoveOnly& operator=(MoveOnly const&) = delete;
19     MoveOnly(int data) : data_(data) { }  in MoveOnly()  function
20     MoveOnly(MoveOnly&& x) : data_(x.data_) { x.data_ = 0; }  in MoveOnly()  argument
22     MoveOnly& operator=(MoveOnly&& x)  in operator =()  argument
25     bool operator==(const MoveOnly& x) const { return data_ == x.data_; }  in operator ==()  argument
28 struct MoveOnlyDerived : MoveOnly {
30     MoveOnlyDerived(int data = 1) : MoveOnly(data) { }  in MoveOnlyDerived()
55         hana::pair<MoveOnly, short> p1(MoveOnly{3}, 4);  in main()
56         hana::pair<MoveOnly, short> p2(std::move(p1));  in main()
57         BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});  in main()
64         hana::pair<MoveOnly, long> p2 = std::move(p1);  in main()
65         BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});  in main()