Joshua Little wrote: [...]
So I have something like this:
std::vector<boost::shared_ptr<Base> > BaseVector;
void add(boost::shared_ptr<Base>& newOne) { BaseVector.push_back(newOne); }
and I call it like this usually : boost::shared_ptr<Derived> p(new Derived); add(p);
I thought that it would work just like using raw pointers (which was working) but I get a compile time error that : no matching function call to add(boost::shared_ptr<Derived>&) canadites are add(boost::shared_ptr<Base>&).. ect.
It should fail with raw pointers, too, unless your compiler is too permissive. The problem is that void add(boost::shared_ptr<Base>& newOne) takes a non-const reference to shared_ptr<Base>, so you need a shared_ptr<Base> to call it. Change it to void add(boost::shared_ptr<Base> const & newOne) and it should work. And, as a general rule, always use a reference to const when you don't intend to modify the argument.