std::deque<T,Allocator>:: back
|
reference back
(
)
;
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(1) | (constexpr since C++26) |
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const_reference back
(
)
const
;
|
(2) | (constexpr since C++26) |
Returns a reference to the last element in the container.
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If empty() is true , the behavior is undefined. |
(until C++26) |
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If empty() is true :
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(since C++26) |
Contents |
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 <deque> int main() { std::deque<char> letters{'a', 'b', 'c', 'd'}; assert(letters.back() == 'd'); }
See also
|
access the first element
(public member function) |
|
|
(C++11)
|
returns a reverse iterator to the beginning
(public member function) |
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(C++11)
|
returns an iterator to the end
(public member function) |