reverse_iterator rend(); (since C++11) const_reverse_iterator rend() const; (since C++11) const_reverse_iterator crend() const; (since C++11) Returns a reverse iterator to the element following the last element of the reversed container. It corresponds to the element preceding the first element of the non-reversed container. This element acts as a placeholder, attempting to access it results in undefined behavior. Parameters (none). Return value Reverse iterator to the

reverse_iterator rbegin(); (since C++11) const_reverse_iterator rbegin() const; (since C++11) const_reverse_iterator crbegin() const; (since C++11) Returns a reverse iterator to the first element of the reversed container. It corresponds to the last element of the non-reversed container. Parameters (none). Return value Reverse iterator to the first element. Exceptions noexcept specification: noexcept Complexity Constant. See also rend crend returns a

reference operator[]( size_type pos ); (since C++11) const_reference operator[]( size_type pos ) const; (since C++11) (until C++14) constexpr const_reference operator[]( size_type pos ) const; (since C++14) Returns a reference to the element at specified location pos. No bounds checking is performed. Parameters pos - position of the element to return Return value Reference to the requested element. Complexity Constant. Notes Unlike std::map::operato

constexpr size_type max_size(); (since C++11) (until C++14) constexpr size_type max_size() const; (since C++14) Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end()) for the largest container. Parameters (none). Return value Maximum number of elements. Exceptions noexcept specification: noexcept Complexity Constant. Notes Because each std::array<T, N> is a

reference front(); (since C++11) const_reference front() const; (since C++11) (until C++14) constexpr const_reference front() const; (since C++14) Returns a reference to the first element in the container. Calling front on an empty container is undefined. Parameters (none). Return value reference to the first element. Complexity Constant. Notes For a container c, the expression c.front() is equivalent to *c.begin(). Example The following code uses front to di

void fill( const T& value ); (since C++11) Assigns the given value value to all elements in the container. Parameters value - the value to assign to the elements Return value (none). Complexity Linear in the size of the container.

iterator end(); (since C++11) const_iterator end() const; (since C++11) const_iterator cend() const; (since C++11) Returns an iterator to the element following the last element of the container. This element acts as a placeholder; attempting to access it results in undefined behavior. Parameters (none). Return value Iterator to the element following the last element. Exceptions noexcept specification: noexcept Complexity Constant. See also begin cbegin

constexpr bool empty(); (since C++11) (until C++14) constexpr bool empty() const; (since C++14) Checks if the container has no elements, i.e. whether begin() == end(). Parameters (none). Return value true if the container is empty, false otherwise. Exceptions noexcept specification: noexcept Complexity Constant. Example The following code uses empty to check if a std::array contains any elements: #include <array> #include <iostream> int main() {

T* data(); (since C++11) const T* data() const; (since C++11) Returns pointer to the underlying array serving as element storage. The pointer is such that range [data(); data() + size()) is always a valid range, even if the container is empty. Parameters (none). Return value Pointer to the underlying element storage. For non-empty containers, returns &front(). Complexity Constant. Exceptions noexcept specification: noexcept See also front access the first

iterator begin(); (since C++11) const_iterator begin() const; (since C++11) const_iterator cbegin() const; (since C++11) Returns an iterator to the first element of the container. If the container is empty, the returned iterator will be equal to end(). Parameters (none). Return value Iterator to the first element. Exceptions noexcept specification: noexcept Complexity Constant. Example See also end cend returns an iterator to the end (public member