# std::get(std::array)

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< cpp‎ | container‎ | array

Defined in header `<array>` |  |
| (1) |
template< std::size_t I, class T, std::size_t N > T& get( std::array<T,N>& a ) noexcept; |  | (since C++11) (until C++14)
template< std::size_t I, class T, std::size_t N > constexpr T& get( std::array<T,N>& a ) noexcept; |  | (since C++14)
| (2) |
template< std::size_t I, class T, std::size_t N > T&& get( std::array<T,N>&& a ) noexcept; |  | (since C++11) (until C++14)
template< std::size_t I, class T, std::size_t N > constexpr T&& get( std::array<T,N>&& a ) noexcept; |  | (since C++14)
| (3) |
template< std::size_t I, class T, std::size_t N > const T& get( const std::array<T,N>& a ) noexcept; |  | (since C++11) (until C++14)
template< std::size_t I, class T, std::size_t N > constexpr const T& get( const std::array<T,N>& a ) noexcept; |  | (since C++14)
| (4) |
template< std::size_t I, class T, std::size_t N > const T&& get( const std::array<T,N>&& a ) noexcept; |  | (since C++11) (until C++14)
template< std::size_t I, class T, std::size_t N > constexpr const T&& get( const std::array<T,N>&& a ) noexcept; |  | (since C++14)

Extracts the `I`th element from the array using tuple-like interface.

`I` must be an integer value in range `[`​0​`,` N`)`. This is enforced at compile time as opposed to at() or operator[].

### Parameters

a | - | array whose contents to extract

### Return value

A reference to the `I`th element of a.

### Complexity

Constant.

### Example

Run this code

    #include <array>
    #include <iostream>

    int main()
    {
        std::array<int, 3> arr;

        // set values:
        std::get<0>(arr) = 1;
        std::get<1>(arr) = 2;
        std::get<2>(arr) = 3;

        // get values:
        std::cout << '(' << std::get<0>(arr)
                  << ',' << std::get<1>(arr)
                  << ',' << std::get<2>(arr)
                  << ")\n";
    }

Output:

    (1,2,3)

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 2485 | C++11 | there are no overloads for const array&& | the overloads are added

### See also

Structured binding (C++17) | binds the specified names to sub-objects or tuple elements of the initializer
operator[] (C++11) | access specified element (public member function)
at (C++11) | access specified element with bounds checking (public member function)
std::get(std::tuple) (C++11) | tuple accesses specified element (function template)
std::get(std::pair) (C++11) | accesses an element of a `pair` (function template)
std::get(std::variant) (C++17) | reads the value of the variant given the index or the type (if the type is unique), throws on error (function template)
get(std::ranges::subrange) (C++20) | obtains iterator or sentinel from a std::ranges::subrange (function template)

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