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std::alloca...onstruction(3) C++ Standard Libary std::alloca...onstruction(3) NAME std::allocator_traits::select_on_container_copy_construction - std::al- locator_traits::select_on_container_copy_construction Synopsis Defined in header <memory> static Alloc select_on_container_copy_construction( const Alloc& a ); (since C++11) (un- til C++20) static constexpr Alloc select_on_container_copy_construction( const (since C++20) Alloc& a ); If possible, obtains the copy-constructed version of the allocator a, by calling a.select_on_container_copy_construction(). If the above is not pos- sible (e.g. Alloc does not have the member function select_on_container_copy_construc- tion()), then returns a, unmodified. This function is called by the copy constructors of all standard li- brary containers. It allows the allocator used by the constructor's argument to become aware that the container is being copied and modify state if necessary. Parameters a - allocator used by a standard container passed as an argument to a container copy constructor Return value The allocator to use by the copy-constructed standard containers. See also copies the state of scoped_allo- cator_adaptor and all its select_on_container_copy_construction alloca- tors (public member function of std::scoped_allocator_adap- tor<OuterAlloc,InnerAlloc...>) http://cppreference.com 2022.07.31 std::alloca...onstruction(3)
NAME | Synopsis | Parameters | Return value | See also
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