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Implementing generic class and multiple interfaces


Implementing generic class and multiple interfaces

By : sandesh89
Date : November 22 2020, 03:03 PM
Hope that helps If I understand your question correctly, you have to do the following:
code :
public class SessionTreeManager<T> 
    : DataManager<T>, IDeletable, IAnotherInterface 
    where T : DataItem {}


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Implementing multiple generic interfaces - type error

Implementing multiple generic interfaces - type error


By : Adel Ahmed
Date : March 29 2020, 07:55 AM
help you fix your problem To call the appropriate one, you'll need to make the compiler think of the expression in the appropriate way:
code :
IFooBarRepository repo = SomeMethodThatGetsTheActualClass();
IRepository<Foo> fooRepo = repo;
Foo foo = fooRepo.Get(1);
IFooBarRepository repo = SomeMethodThatGetsTheActualClass();
Foo foo = ((IRepository<Foo>)repo).Get(1);
public class FooBarRepository : IFooBarRepository
{
    Foo IRepository<Foo>.Get(int id)
    {
        return new Foo();
    } 

    Bar IRepository<Bar>.Get(int id)
    {
        return new Bar();
    } 
}
Implementing multiple generic interfaces

Implementing multiple generic interfaces


By : Samer Tabbal
Date : March 29 2020, 07:55 AM
like below fixes the issue There is only one handle(Object) method in reality. You are effectively write the same as
code :
public class CompositeListener implements EventListener {
    public void handle(Object event) {
        if (event instanceof PriceUpdate) {
            ///
        } else if (event instanceof OrderEvent) {
            ///
        }
    }
}
Pointer to class, implementing multiple interfaces

Pointer to class, implementing multiple interfaces


By : ari
Date : March 29 2020, 07:55 AM
may help you . Your code is OK. There's no slicing because you are casting pointers, not class types. Note that the cast is not even needed here:
code :
I1 *i = static_cast<I1*>(&c);
C *p = static_cast<C*>(i);
if (C *p = dynamic_cast<C*>(i)) {
    // use p
}
Understanding generics syntax in java - generic types implementing multiple interfaces as parameters

Understanding generics syntax in java - generic types implementing multiple interfaces as parameters


By : Aishwarya Chandrashe
Date : March 29 2020, 07:55 AM
it fixes the issue Unlike TypeParameter, TypeArgument can't have several bounds, so is not valid.
Here's my guess on why it is so.
Creating common base class implementing two generic interfaces?

Creating common base class implementing two generic interfaces?


By : Yvon
Date : March 29 2020, 07:55 AM
help you fix your problem You can implement both interfaces, and implement one or both using an Explicit Interface Implementation. This allows you to have different implementations for each interface, if this is a requirement.
If this is not a requirement, simply implementing both should be straightforward, since both interfaces are effectively the same in terms of one generic type:
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