std::inplace_vector<T,N>:: back

Returns a reference to the last element in the container.

If empty() is true :

• If the implementation is hardened , a contract violation occurs. Moreover, if the contract-violation handler returns under “observe” evaluation semantic, the behavior is undefined.
• If the implementation is not hardened, the behavior is undefined.

Return value

Reference to the last element.

Complexity

Constant.

Notes

For a non-empty container c , the expression c. back ( ) is equivalent to * std:: prev ( c. end ( ) ) .

Example

#include <cassert>
#include <inplace_vector>
int main()
{
    std::inplace_vector<char, 4> letters{'a', 'b', 'c', 'd'};
    assert(letters.back() == 'd');
}

See also