Re: copying a vector of objects at runtime
Joe Greer wrote:
"Julian" <email@example.com> wrote in
I have a vector defined like this:
which is populated with different objects of classes that are derived
I need to make a copy of this list during runtime.
I imagine I'd have to loop through the list, make a copy of each of
the objects in the vector using the copy constructor... but I don't
know the class name during run time so that I can call the appropriate
Hmmm, if copying the objects in the vector is the answer, then I have to
wonder why there are pointers in the vector to begin with. That is,
wouldn't vector<Load> have been a better place to start? Then copying
would be as simple as LoadList2 = LoadList. IME the only time you
really want a vector of pointers is if the objects have identity
(can't/shouldn't be copied at all) or are horrendously expensive to
You forgot the other case, where your vector contains polymorphic
objects. But then you should probably be using a container of your
favorite smart pointer.
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