Priority Queue Comparison

Question

I\'m trying to declare a priority queue in c++ using a custom comparison function...

So , I declare the queue as follows:

std::priority_queue

        

Answer 1

You can use C++11 lambda function. You need to create lambda object, pass it to the template using decltype and also pass it to the constructor. It looks like this:

auto comp = [] (int &a, int &b) -> bool { return a < b; };
std::priority_queue, decltype(comp) > pq (comp);