std::priority_queue<T,Container,Compare>:: empty

Checks if the underlying container has no elements. Equivalent to: return c . empty ( ) .

Parameters

(none)

Return value

true if the underlying container is empty, false otherwise.

Complexity

Constant.

Example

#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