On 26 Ebr 2005, at 19:23, Caleb Epstein wrote:
On 4/26/05, Philippe Mori <philippe_mori@hotmail.com> wrote:
Since a Limousine is a Car, you should able to do
Cars.insert(Cars.end(), Limousines.begin(), Limousines.end());
at least if you have a recent compiler.
And if you don't mind slicing your objects. You can't store polymorphic types directly in std containers.
-- Caleb Epstein caleb dot epstein at gmail dot com
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Well that's easy enough to get round, use pointers. if you are storing objects in containers, it normally is good practice to use pointers anyway because the STL passes data round by value, and not my reference / pointer, and therefore unless your objects are very lightweight and/or have copy constructors, then storing objects by value is normally a big no-no in most cases. ... One good exception to the rule here would be if you had smart pointers, obviously these objects are copied into the container, and these are lightweight and implement copy constructors / assignment operators. Generally, if you are going to use pointers, depending on the complexity of the object life-cycle, it is often wise to use something like boost::shared_ptr , as it will reduce the the risks of things like dangling pointers etc etc. Jason