std::array

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Containers library
array (C++11) vector deque forward_list (C++11) list set multiset map multimap unordered_set (C++11) unordered_multiset (C++11) unordered_map (C++11) unordered_multimap (C++11) stack queue priority_queue
std::array
Member functions Element access array::at array::operator[] array::front array::back array::data Iterators array::begin array::cbegin array::end array::cend array::rbegin array::crbegin array::rend array::crend Capacity array::empty array::size array::max_size Modifiers array::fill array::swap

Defined in header <array>
​template<     class T,     size_t N > struct array;​		(C++11 feature)

array is a container that encapsulates constant size arrays.

This struct is designed to provide the benefits of a STL container (an array knows its own size, supports assignment, etc.) while still providing the performance of C-style arrays.

Contents 1 Member types 2 Member functions 2.1 Element access 2.2 Iterators 2.3 Capacity 2.4 Operations Member types
Member type	Definition
value_type	T
size_type	​size_t​
size_type	​ptrdiff_t​
reference	value_type&
const_reference	const value_type&
pointer	T*
const_pointer	const T*
iterator	Random access iterator
const_iterator	Constant random access iterator
reverse_iterator	​std::reverse_iterator<iterator>​
const_reverse_iterator	​std::reverse_iterator<const_iterator>​

Member functions
Element access
at	access specified element with bounds checking (public member function)
operator[]	access specified element (public member function)
front	access the first element (public member function)
back	access the last element (public member function)
data	direct access to the underlying array (public member function)
Iterators
begin cbegin	returns an iterator to the beginning (public member function)
end cend	returns an iterator to the end (public member function)
rbegin crbegin	returns a reverse iterator to the beginning (public member function)
rend crend	returns a reverse iterator to the end (public member function)
Capacity
empty	checks whether the container is empty (public member function)
size	returns the number of elements (public member function)
max_size	returns the maximum possible number of elements (public member function)
Operations
fill	fill the container with specified value (public member function)
swap	swaps the contents (public member function)