Difference between revisions of "cpp/container/queue/size"
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Latest revision as of 07:13, 20 November 2021
| size_type size() const; |
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Returns the number of elements in the container adaptor. Equivalent to: return c.size().
Contents |
[edit] Parameters
(none)
[edit] Return value
The number of elements in the container adaptor.
[edit] Complexity
Constant.
[edit] Example
Run this code
#include <cassert> #include <queue> int main() { std::queue<int> queue; assert(queue.size() == 0); const int count = 8; for (int i = 0; i != count; ++i) queue.push(i); assert(queue.size() == count); }
[edit] See also
| checks whether the container adaptor is empty (public member function) | |
| (C++17)(C++20) |
returns the size of a container or array (function template) |
