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std::stack(3) C++ Standard Libary std::stack(3) NAME std::stack - std::stack Synopsis Defined in header <stack> template< class T, class Container = std::deque<T> > class stack; The std::stack class is a container adaptor that gives the program- mer the functionality of a stack - specifically, a LIFO (last-in, first-out) data structure. The class template acts as a wrapper to the underlying container - only a specific set of functions is provided. The stack pushes and pops the element from the back of the underlying container, known as the top of the stack. Template parameters T - The type of the stored elements. The program is ill- formed if T is not the same type as Container::value_type. The type of the underlying container to use to store the elements. The container must satisfy the requirements of SequenceCon- tainer. Additionally, it must provide the following functions with the usual semantics: * back(), e.g., std::vector::back(), Container - * push_back(), e.g., std::deque::push_back(), * pop_back(), e.g., std::list::pop_back(). The standard containers std::vector (including std::vec- tor<bool>), std::deque and std::list satisfy these requirements. By default, if no container class is specified for a particular stack class instantiation, the standard container std::deque is used. Member types Member type Definition container_type Container value_type Container::value_type size_type Container::size_type reference Container::reference const_reference Container::const_reference Member objects Member name Definition Container c the underlying container (protected member object) Member functions constructor constructs the stack (public member function) destructor destructs the stack (public member function) operator= assigns values to the container adaptor (public member function) Element access top accesses the top element (public member function) Capacity empty checks whether the container adaptor is empty (public member function) size returns the number of elements (public member function) Modifiers push inserts element at the top (public member function) push_range inserts a range of elements at the top (C++23) (public member function) emplace constructs element in-place at the top (C++11) (public member function) pop removes the top element (public member function) swap swaps the contents (C++11) (public member function) Non-member functions operator== operator!= operator< operator<= lexicographically compares the values of two stacks operator> (function template) operator>= operator<=> (C++20) std::swap(std::stack) specializes the std::swap algorithm (C++11) (function template) Helper classes std::uses_allocator<std::stack> specializes the std::uses_allocator type trait (C++11) (class template specialization) std::formatter<std::stack> formatting support for std::stack (C++23) (class template specialization) Deduction guides (since C++17) Notes Feature-test macro Value Std Feature __cpp_lib_containers_ranges 202202L (C++23) Ranges construction and insertion for containers Example This section is incomplete Reason: no example Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct behavior LWG 307 C++98 Container could not be allowed std::vector<bool> LWG 2566 C++98 Missing the requirement for ill-formed if T is not the same type Container::value_type as Con- tainer::value_type See also vector dynamic contiguous array (class template) vector<bool> space-efficient dynamic bitset (class template specialization) deque double-ended queue (class template) list doubly-linked list (class template) Category: * Todo no example http://cppreference.com 2024.06.10 std::stack(3)
NAME | Synopsis | Template parameters | Member types | Member objects | Member functions | Element access | Capacity | Modifiers | Non-member functions | Helper classes | Notes | Example | See also | Category:
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