std::array<T,N>::at (3) - Linux Manuals

std::array<T,N>::at: std::array<T,N>::at

NAME

std::array<T,N>::at - std::array<T,N>::at

Synopsis

reference at( size_type pos ); (until C++17)
constexpr reference at( size_type pos ); (since C++17)
const_reference at( size_type pos ) const; (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 is 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.