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Library/boost/libs/container/example/doc_emplace.cpp
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19 дек 2024, 19:11
19 дек 2024, 19:11
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////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2009-2013. Distributed under the Boost // Software License, Version 1.0. (See accompanying file // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // // See http://www.boost.org/libs/container for documentation. // ////////////////////////////////////////////////////////////////////////////// #include <boost/container/detail/config_begin.hpp> #include <boost/container/detail/workaround.hpp> //[doc_emplace #include <boost/container/list.hpp> #include <cassert> //Non-copyable and non-movable class class non_copy_movable { non_copy_movable(const non_copy_movable &); non_copy_movable& operator=(const non_copy_movable &); public: non_copy_movable(int = 0) {} }; int main () { using namespace boost::container; //Store non-copyable and non-movable objects in a list list<non_copy_movable> l; non_copy_movable ncm; //A new element will be built calling non_copy_movable(int) constructor l.emplace(l.begin(), 0); assert(l.size() == 1); //A new element will be value initialized l.emplace(l.begin()); assert(l.size() == 2); return 0; } //] #include <boost/container/detail/config_end.hpp>