Question

Good day to everyone!
I have:

“ClassA.h”

class ClassA
{
....
public:
priority_queue<OBJECT*, vector<OBJECT*>, compound_objectNS::compare>  m_prior_queue_Objects; 
....
}

“ClassB.h”

class ClassB
{
void someFunction(void);
ClassA* m_network;
}

“ClassB.cpp”

void ClassB::someFunction(void)
{
vector<Compound_object*>::const_iterator vit;
vit = this->m_network->m_prior_queue_Objects.top();

• and here I get from iSense – Error no operator “=” matches this operands.
  What is wrong?!
  }

Update: typedef Compound_object* OBJECT*

Answer 1

priority_queue::top() returns a const reference to an element, and you are trying to assign to an iterator. You can do two things:

Instantiate a (const or non-const) pointer from the const reference to pointer:

OBJECT* p = priority_queue::top(); 

Instantiate a const reference to pointer from the return.

const OBJECT*& r = priority_queue::top();