How to properly delete pointer from a std::list?

Question

I\'m creating an object via new, then later adding the pointer to an std::list once the object is set up.

What is the correct way of deleting a pointer

Answer 1

If you change your std::list to hold datalist instances instead of datalist* pointers, then you don't have to delete the datalist instances manually anymore. When you remove an element from a std::list (or any other STL container, for that matter), the element's data is freed automatically for you. If the element is a class/struct with a destructor defined, the destructor will be called.

Try this:

std::list

.

datalist AR; // <-- local variable on the stack, freed when out of scope
AR.index = ...;
AR.number = ...;
mylist.push_back(AR); // <-- pushes a copy-constructed instance of the variable

.

std::list