std::deque<T,Allocator>::size - cppreference.com
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(noexcept since C++11) | |
Returns the number of elements in the container, i.e. std::distance(begin(), end()).
Return value
The number of elements in the container.
Complexity
Constant.
Example
The following code uses size to display the number of elements in a std::deque:
#include <deque> #include <iostream> int main() { std::deque<int> nums{1, 3, 5, 7}; std::cout << "nums contains " << nums.size() << " elements.\n"; }
Output:
nums contains 4 elements.
See also
| checks whether the container is empty (public member function) [edit] | |
| returns the maximum possible number of elements (public member function) [edit] | |
| changes the number of elements stored (public member function) [edit] | |
| returns the size of a container or array (function template) [edit] |