std::deque::back
From cppreference.com
reference back();
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const_reference back() const;
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Returns reference to the last element in the container.
Calling back
on an empty container is undefined.
Contents |
[edit] Parameters
(none)
[edit] Return value
Reference to the last element.
[edit] Complexity
Constant.
[edit] Notes
For a container c
, the expression return c.back(); is equivalent to { auto tmp = c.end(); --tmp; return *tmp; }
[edit] Example
The following code uses back
to display the last element of a std::deque<char>:
Run this code
#include <deque> #include <iostream> int main() { std::deque<char> letters {'o', 'm', 'g', 'w', 't', 'f'}; if (!letters.empty()) { std::cout << "The last character is: " << letters.back() << '\n'; } }
Output:
The last character is f
[edit] See also
access the first element (public member function) |