std::array::at

 

C++

Language

Standard library headers

Concepts

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::beginarray::cbegin

array::endarray::cend

array::rbeginarray::crbegin

array::rendarray::crend

Capacity

array::empty

array::size

array::max_size

Modifiers

array::fill

array::swap

Non-member functions

get

swap

Helper classes

tuple_size

tuple_element

 

reference       at( size_type pos );		(since C++11)
const_reference at( size_type pos ) const;		(since C++11) (until C++14)
constexpr const_reference at( size_type pos ) const;		(since C++14)

Returns a reference to the element at specified location pos, with bounds checking.

If pos not within the range of the container, an exception of type std::out_of_range is thrown.

Parameters

pos

-

position of the element to return

Return value

Reference to the requested element.

Exceptions

std::out_of_range if !(pos < size()).

Complexity

Constant.

See also

operator[]

access specified element (public member function)