priority queue clear method

Question

How do I delete all elements from a priority queue? That means how do I destroy a priority queue? advanced thanks for your answer. Is there any clear- or erase-like method

Answer 1

Here's a clean and simple method to clear any priority_queue (and queue, and most other containers as well):

template 
void clearQueue(Q & q) {
    q = Q();
}

Since it's a template, you don't have to remember all the template parameters.

Example:

std::priority_queue simpleQueue;
std::priority_queue, MyHashFunction> customQueue;

// ... later ...

clearQueue(customQueue);
clearQueue(simpleQueue);