std::deque size() method
- od C++11
- do C++11
// Const version only
bool size() const noexcept;
// Const version only
bool size() const;
Returns the number of elements in the deque, i.e. std::distance(begin(), end()).
Parameters
(none)
Return value
The number of elements in the deque.
Complexity
Constant - O(1).
Exceptions
(none)
Example
Main.cpp
#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.
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