Difference between revisions of "cpp/container/priority queue/empty"
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< cpp | container | priority queue
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Revision as of 11:51, 2 November 2012
| bool empty() const; |
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Checks if the underlying container has no elements. Equivalent to: return c.empty().
Contents |
Parameters
(none)
Return value
true if the underlying container is empty, false otherwise.
Complexity
Constant.
Example
Run this code
#include <cassert> #include <queue> int main() { std::priority_queue<int> queue; assert(queue.empty()); queue.push(42); assert(!queue.empty()); queue.pop(); assert(queue.empty()); }
See also
| returns the number of elements (public member function) | |
| (C++17) |
checks whether the container is empty (function template) |
