How to pass a dereference operator to a function?

Question

C++ / C#

There is a container with pointers, it needs to be converted to a container of objects, that is, just dereference each pointer. Right now I'm doing it with transform and a lambda.

vector<GameObject> ToVector(
    const set<GameObject*, DereferenceCompare<GameObject, greater>> &cont)
{
    vector<GameObject> res(size(cont));
    transform(cbegin(cont), cend(cont), begin(res), [](GameObject *const p) {
        return *p; 
    });
    return res;
}

Is there a way to shorten the code even more, maybe there is some standard function that dereferences the pointer?

Answer 1

In short, it will only be with the range library (from boost, or range-v3).
By the way, you need to check the pointer for null, at least with an assertion, if you are sure that there are always valid pointers there.
Also, you are essentially copying objects. It is expensive. If this was not planned, then I advise you to use smart pointers or reference_wrapper. In addition, in modern C++ there is almost no need to use raw pointers.