How-To: check if array<T>^ == nullptr ? C++ / CLI

Question

Hi all,

I've done a pretty basic class in C++/CLI using generics. How can I check if the generic array^ equals nullptr?

generic<class T> where T: IGenericContainable
public ref class FIBEXGenericContainer abstract : AbstractFIBEXNode
{
public:
    property array<T>^ Children;

public:

    property T default[String^]
    {
        T get(String^ aID)
        {
            if(nullptr == Children)
                Console::WriteLine("this won't happen, because I get an NullReferenceException in the above line");

            for each(T tObj in Children)
            {
                if(aID == tObj->ID)
                    return tObj;
            }

            return T();
        }
    }
};

Thank you guys!

Answer 1

Sounds like this is null, not this->Children. A non-virtual function can sometimes be called on a null reference, with the results you see (failure occurs inside the function instead of in the caller).