I have a question about a problem I\'m struggling with. Hope you can bear with me. Imagine I have an Object class representing the base class of a hierarchy of physical objects. Later I inherit from
In the following code: class A { }; class B : public A { }; class C : public A { int x; }; int main (int argc, char** argv) {
The following code, prints out Derived Base Base But I need every Derived object put into User::items, call its own print function, but not the base class one. Can I achieve that without using poin
How can I implement a polymorphic binary search tree (that makes use of EmptyTree and NonEmptyTree) without using downcasting or class checkin开发者_高级运维g?Create a common interface such as:
I\'m working on a homework assignment (a project), for which one criterion is that I must make use of polymorphism in a way which noticeably improves the overall quality or functionality of my code.
I was wondering how to do this, consider the following classes public class Fruit { public string Name { get; set; }
Given the following situation (UML below), If Y has the method: public void PrintWs(); and X has: ArrayList <P> myPs = new ArrayList();
Ok, I have a relationship between People, Users and Employees such that All Employees are Users and all Users are People. Person is an abstract class that User is derived from and Employee is derived
class Followup < ActiveRecord::Base belongs_to :post belongs_to :comment end This model needs to only have either a post or a comment, but only one of the two.
this is my first question here :) I know that I should not check for object type but instead use dynamic_cast, but that would not solve my problem.
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