| 1 | ////////////////////////////////////////////////////////////////////////////// |
|---|---|
| 2 | // |
| 3 | // (C) Copyright Ion Gaztanaga 2009-2013. Distributed under the Boost |
| 4 | // Software License, Version 1.0. (See accompanying file |
| 5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 6 | // |
| 7 | // See http://www.boost.org/libs/container for documentation. |
| 8 | // |
| 9 | ////////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | //[doc_move_containers |
| 12 | #include <boost/container/vector.hpp> |
| 13 | #include <boost/move/utility_core.hpp> |
| 14 | #include <cassert> |
| 15 | |
| 16 | //Non-copyable class |
| 17 | class non_copyable |
| 18 | { |
| 19 | BOOST_MOVABLE_BUT_NOT_COPYABLE(non_copyable) |
| 20 | |
| 21 | public: |
| 22 | non_copyable(){} |
| 23 | non_copyable(BOOST_RV_REF(non_copyable)) {} |
| 24 | non_copyable& operator=(BOOST_RV_REF(non_copyable)) { return *this; } |
| 25 | }; |
| 26 | |
| 27 | int main () |
| 28 | { |
| 29 | using namespace boost::container; |
| 30 | |
| 31 | //Store non-copyable objects in a vector |
| 32 | vector<non_copyable> v; |
| 33 | non_copyable nc; |
| 34 | v.push_back(x: boost::move(t&: nc)); |
| 35 | assert(v.size() == 1); |
| 36 | |
| 37 | //Reserve no longer needs copy-constructible |
| 38 | v.reserve(new_cap: 100); |
| 39 | assert(v.capacity() >= 100); |
| 40 | |
| 41 | //This resize overload only needs movable and default constructible |
| 42 | v.resize(new_size: 200); |
| 43 | assert(v.size() == 200); |
| 44 | |
| 45 | //Containers are also movable |
| 46 | vector<non_copyable> v_other(boost::move(t&: v)); |
| 47 | assert(v_other.size() == 200); |
| 48 | assert(v.empty()); |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 | //] |
| 53 |