Any class that extends class type

Any class that extends class type

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Any class that extends class type
Tag : typescript , By : T11M
Date : November 28 2020, 04:01 AM

this will help How would I declare a type that is typeof B and any class that extends B? I've made a type that accepts an array of classes that extends the Component class, but this isn't working on TSC 3.(1.4|2.1). , Use this:
const a = <T extends new(...args: any) => B> (p: T|B) => p;
export type NewComponnent = new (...args: any[]) => Component<any>;

export interface ComponentFlags<S> {
    imports?: (components: NewComponent[]) => void;
    // OR
    // imports?: (...components: NewComponent[]) => void;

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Type mismatch: cannot convert from Class<Parameterized> to Class<? extends Runner>

Tag : java , By : n1ckless_id
Date : March 29 2020, 07:55 AM
With these it helps I am trying to execute the JUNIT tests with parameters. , You have the wrong class imported:
import com.beust.jcommander.Parameterized;
import org.junit.runners.Parameterized;

Explanation for convoluted generic-type declaration. What does Class<? extends Class<? extends Actor>[]> act

Tag : java , By : user186012
Date : March 29 2020, 07:55 AM
wish helps you Yes. Let's work from the inside out:
? extends Actor means something that is Actor or any subtypes of Actor. Class[] means an array of Class objects where each object represents a class that is either Actor or is a subtype of Actor. Class[]> represents the class of an array of class objects, where each object is either Actor or one of its subtypes.*
//actorClass is a Class<T> object that represents Actor.class 
//or any of its subtypes
Class<? extends Actor> actorClass = Actor.class;

//classArray is an array of Class<? extends Actor> objects, and so its type is 
//Class<? extends Actor>[]
//You will get a warning about an unsafe cast here because you
//cannot really create an array of generic type, which means the
//RHS type is just `Class[]`.
Class<? extends Actor>[] classArray = new Class[] {
    actorClass, actorClass, actorClass

//Now we get the class of the array itself, which matches the convoluted
//expression you saw.
Class<? extends Class<? extends Actor>[]> classArrayClass = classArray.getClass();

Type checking class (not instance of class) extends another class

Tag : typescript , By : Ambarish Singh
Date : March 29 2020, 07:55 AM
help you fix your problem You can represent classes like this: { new(): BaseClass }.
Or in an example:
interface BaseClassConstructor<T extends BaseClass> {
    new (): T;

class BaseClass {
    str: string;

class ExtendedClass extends BaseClass { }

function fn<T extends BaseClass>(ctor: BaseClassConstructor<T>) {


fn(BaseClass); // fine
fn(ExtendedClass); // fine

class A {
    prop: any;

fn(A);  // error

Parameter type of method to correspond to inner class which extends super's inner class

Tag : java , By : antonio
Date : March 29 2020, 07:55 AM
may help you . I believe your best shot here is using generics.
Something along the lines of
abstract class A<T extends A.B> {
    class B {
      // ...

    abstract void func(T param) {

class Asub<Asub.B> extends A {
    class B extends A.B {
      // ...

    void func(Asub.B param) {
      // ...

Selenium: Type mismatch: cannot convert from Class<CustomListeners> to Class<? extends ITestNGListener>[]

Tag : selenium , By : msg
Date : March 29 2020, 07:55 AM
Hope that helps Selenium is not part of TestNG. The WebDriverEventListener interface doesn't extend ITestNGListener. The two classes have nothing in common. TestNG requires a class that extends or implements one of the listeners for this to work. To combine this two classes to work make your class CustomListeners extend the org.testng.TestListenerAdapter class, because it's the only listener class, and not an interface so you would not need to implement TestNG methods.
This should be your class declaration:
 public class CustomListeners extends TestListenerAdapter implements WebDriverEventListener
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