[Boost-users] boost::priority_queue const correctness problem, help needed

Subject: [Boost-users] boost::priority_queue const correctness problem, help needed
From: Ram (sourceopen_at_[hidden])
Date: 2017-12-08 14:43:53

Created a boost::priority_queue with my comparison operation defined. Here
is how my priority_queue looks,

boost::heap::priority_queue<myObject*,
boost::heap::compare<myObjectPtrCompare> > max_heap;

boost::heap::priority_queue<myObject*,
boost::heap::compare<myObjectPtrCompare> > max_heap;

My comparison is defined as,

struct myObjectPtrCompare

{

    bool operator()(const myObject* lhs, const myObject* rhs) const

    {

        return (lhs->getTime() < rhs->getTime());

    }

};

I have used it as,

myObject* obj1 = static_cast<myObject*>(base1);

'base1' is an object of class 'myBase'(base class of myObject)

myObject and getTime() within it used for comparision are defined as,

class myObject : public myBase {

    Time getTime() const { return time; }

....

}

Compiling this gives me this error,

c:\Projects\pq_test.cpp(27): error C2662: 'void
boost::heap::priority_queue<myObject*,boost::heap::compare<myObjectPtrCompare>,boost::parameter::void_,boost::parameter::void_,boost::parameter::void_>::push(myObject
*const &)' : cannot convert 'this' pointer from 'const
boost::heap::priority_queue<myObject
*,boost::heap::compare<myObjectPtrCompare>,boost::parameter::void_,boost::parameter::void_,boost::parameter::void_>'
to 'boost::heap::priority_queue<myObject
*,boost::heap::compare<myObjectPtrCompare>,boost::parameter::void_,boost::parameter::void_,boost::parameter::void_>
&'

1>          Conversion loses qualifiers

Using Visual Studio 2013 C++. I understand that I am doing something wrong
with const correctness, but I am not able to figure out what is wrong. Any
help is appreciated.

TIA!