I have been trying to generate a Factory supposed to return a different object of a common interface (say Item) according to the input parameter (I call it a context) of the function getItem(A context
I have a problem where I have two forms that are identical except that the required fields are different.For example, let\'s say the forms have the same fields: X, Y, and Z.In Form #1, X is required,
I\'m using the JS prototype inheritance pattern from Gavin Kistner and I\'m not quite sure why deep inheritance doesn\'t work for me.
In some books there is written that class that declares or inherits a virtual function is called a polymorphic class.
I have 2 classes.Let\'s call them class A and class B. 开发者_运维百科 Class A contains a method that executes some action.Class B overrides this method with its own version, but does make a super cal
So here is the deal, I think I need to go another route regarding the pattern I am using but I thought I would get some expert opinions first.
When using boost::scoped_ptr to hold a reference, the destructor of the derived object is not called. It does when using boost::shared_ptr.
How can a base pointer holding derived object still point to base function ? Here After a_ptr = &b_obj;
I have a interface called ABC. I also have an abstract class PQR and there are 3 classes which extend this abstract class.
I would like to understand the key difference between parametric polymorphism such as polymorphism of generic classes/functions in the Java/Scala/C++ languages and \"ad-hoc\" polymorphism in the Haske
加载中,请稍侯......