Generics and polymorphism

Generics and polymorphism

By : stryftek
Date : October 28 2020, 04:55 PM
With these it helps Polymorphism is a property of classes, in that they implement a common interface, or are derived from a base class, implementing virtual methods in a different way to reflect the different behavior of derived classes.
Generics is a property of an algorithm, or a class implementing an algorithm (sort) or a common operation (lists), requiring the classes they deal with to have certain methods, properties, or interfaces.
code :

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Please help me understand polymorphism when using generics in c#

Please help me understand polymorphism when using generics in c#

By : wlbr
Date : March 29 2020, 07:55 AM
will help you Note: In all cases, you will have to initialize the Contents field to a concrete object that implements IList
When you keep the generic constraint, you can do:
code :
public IList<T> Contents = new List<T>();
public IList<MyInterface> Contents = new List<MyInterface>();
public void CallAllMethodsInContainer<T>(MyContainer<T> container) where T : IMyInterface
    foreach (T myClass in container.Contents)
MyContainer<MyClass> container = new MyContainer<MyClass>();
container.Contents.Add(new MyClass());
public void CallAllMyMethodsInContents()
        foreach (T myClass in Contents)
MyContainer<MyClass> container = new MyContainer<MyClass>();
container.Contents.Add(new MyClass());
public class MyContainer
    public IList<MyInterface> Contents;
  public void CallAllMethodsInContainer(MyContainer container)
MyContainer container = new MyContainer();
container.Contents.Add(new MyClass());
C# generics with polymorphism

C# generics with polymorphism

By : hopeless
Date : March 29 2020, 07:55 AM
wish helps you Without a simpler and yet more-complete code example, it's impossible to provide specific advice in your specific scenario. However, the basic problem is that the types are indeed not convertible, just as the compiler says.
Why can I not convert TagSystem to AComponentSystem? This seems like a valid morph.
Java generics and polymorphism

Java generics and polymorphism

By : Martin
Date : March 29 2020, 07:55 AM
I hope this helps . Generics
What you see here are generics. It has nothing to do with polymorphism.
code :
public static void foo(int bar) { ... }
public class Pair<A, B> { ... }
Pair<String, Integer> stringAndInteger;
Pair<Dog, Car> dogAndCar;
public void setFirst(A first) { ... }
public class Animal {
    public void makeNoise() {
public class Dog extends Animal {
    public void makeNoise() {
        System.out.println("wuff wuff");

    public String getName() {
        return "John";
Generics polymorphism in GWT

Generics polymorphism in GWT

By : Muthu kannan
Date : March 29 2020, 07:55 AM
To fix this issue The problem is that you have defined tableImpl with the type CellTable.
? extends Model means "some specific subclass of Model, but I am not sure what it is".
why polymorphism not applicable with generics?

why polymorphism not applicable with generics?

By : tpersons
Date : March 29 2020, 07:55 AM
hop of those help? what is the problem with the below code , It's applicable when you write
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