Questions tagged [polymorphism]
In computer science, polymorphism is a programming language feature that allows values of different data types to be handled in a uniform manner.
polymorphism
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How do you do polymorphism in Ruby?
In C#, I can do this:
class Program
{
static void Main(string[] args)
{
List<Animal> animals = new List<Animal>();
animals.Add(new Dog());
animals.Add(new ...
- 175k
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votes
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answers
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What's the difference between Polymorphism and Multiple Dispatch?
...or are they the same thing? I notice that each has its own Wikipedia entry: Polymorphism, Multiple Dispatch, but I'm having trouble seeing how the concepts differ.
Edit: And how does Overloading ...
- 21.8k
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Where do "pure virtual function call" crashes come from?
I sometimes notice programs that crash on my computer with the error: "pure virtual function call".
How do these programs even compile when an object cannot be created of an abstract class?
- 345k
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How are virtual functions and vtable implemented?
We all know what virtual functions are in C++, but how are they implemented at a deep level?
Can the vtable be modified or even directly accessed at runtime?
Does the vtable exist for all classes, ...
- 345k
37
votes
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Reintroducing functions in Delphi
What was the motivation for having the reintroduce keyword in the Delphi Programming Language?
If you have a child class that contains a function with the same name as a virtual function in the parent ...
- 1,061
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votes
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Can I prevent an inherited virtual method from being overridden in subclasses?
I have some classes layed out like this
class A
{
public virtual void Render()
{
}
}
class B : A
{
public override void Render()
{
// Prepare the object for rendering
...
- 950
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Expression Evaluation and Tree Walking using polymorphism? (ala Steve Yegge)
This morning, I was reading Steve Yegge's: When Polymorphism Fails, when I came across a question that a co-worker of his used to ask potential employees when they came for their interview at Amazon.
...
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Inheritance and Polymorphism - Ease of use vs Purity
In a project our team is using object lists to perform mass operations on sets of data that should all be processed in a similar way. In particular, different objects would ideally act the same, ...
- 9,932
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votes
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answers
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Hiding inherited members
I'm looking for some way to effectively hide inherited members. I have a library of classes which inherit from common base classes. Some of the more recent descendant classes inherit dependency ...
- 12.2k