Why does list insertion fail when sufficient size is provided on construction?

Question

If we have the following variable declaration:

List list = new List(5);

Why does this:

list.insert(2, 3);
         


        

Answer 1

The size in the constructor tells it how much to allocate for the background array - it is still, however, empty (just: empty with a certain amount of initial space).

You can ony insert into the used part of the list, or at the end.