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References, Pointers, Ownership

C++

Who owns this, and who is merely looking at it — answered in the signature with a type rather than in a comment nobody reads.

This track is written for C++, which isn't the mode you're browsing in.

0 / 4 solved
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  1. 1. Not solved yet. Say it in the signature
  2. 2. Not solved yet. A raw pointer owns nothing
  3. 3. Not solved yet. The gap between new and the smart pointer
  4. 4. Not solved yet. Two owners, and neither one ever leaves

Check yourself

4 questions · one attempt each

These do not count toward finishing the track. They are here to catch the things that are easy to read past.

0 / 4

Base has virtual functions but a non-virtual destructor. What happens on delete b? 

struct Base { virtual void f(); };          // no virtual ~Base
struct Der : Base { std::vector<int> big; ~Der(); };

Base* b = new Der();
delete b;
Question 1 of 4