extends Questions
1
Solved
I am trying to create an interface that omits a property from the given type. To do so, I used Omit which results in Type so it is wrong by its definition. However, if it was not a generic interfac...
Slaton asked 8/3, 2020 at 11:26
8
I am wondering under what circumstances do we extend an interface from an interface? Because, for example
interface A{
public void method1();
}
interface B extends A{
public void method2();
}
c...
Brannan asked 18/11, 2012 at 3:16
5
Solved
Here is the problem that I have been being tried to find the solution.
We have two class definitions. One of two extends other one.
class T{}
class TT extends T{}
The requirement is that ther...
1
I am trying to provide a different service based on a value from my ConfigService.
The problem I am running into is that the mongoose model that gets injected does not return any values when exec...
Inexpugnable asked 14/12, 2018 at 9:32
5
I need to inherit the state. Can I inherit the state? When I do this, I get an empty state.
class Example extends Component {
constructor(props) {
super();
this.state = {
param1:
};
}
...
...
Tillo asked 9/8, 2018 at 12:50
3
Solved
I have a parent service which has some dependencies like
@Injectable()
export class ParentService{
constructor(private http:Http, private customService:CustomService){}
}
and I want to extend t...
Orling asked 29/8, 2016 at 14:12
1
Solved
I wondering how to correctly infer 2th and 3th template of my function
suppose a simple interface
interface ISome {
a: string;
b?: {
c: string;
};
}
The following works:
function pathBuilder&l...
Arcadia asked 18/4, 2019 at 23:18
7
Solved
Can an interface extend multiple interfaces in Java? This code appears valid in my IDE and it does compile:
interface Foo extends Runnable, Set, Comparator<String> { }
but I had heard that...
Skricki asked 23/10, 2013 at 15:45
4
Solved
In java, say I have the following class:
public class A{
protected class B{
}
}
can I extend the inner class by doing the following?
public class C extends A{
protected class D extends B{
}...
Bujumbura asked 26/2, 2012 at 23:1
3
Solved
I have my own base abstract class which extends Activity class.
public abstract class BaseActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate...
Rome asked 18/5, 2012 at 13:4
3
Solved
abstract class AbstractCase2 {
abstract static void simpleMethod1();//giving error
}
class Case2 extends AbstractCase2 {
static void simpleMethod1() {
System.out.println("Within simpleMethod1")...
18
Solved
If I have several classes with functions that I need but want to store separately for organisation, can I extend a class to have both?
i.e. class a extends b extends c
edit: I know how to extend ...
2
Solved
Say I have the following classes:
class Foo {
protected void method() {}
}
class Bar extends Foo {
}
At this point, from the class Bar, I have access to method() in two ways:
super.method()...
2
Solved
I am trying to create a table class that extends ArrayList. In it, I would like to be able to create a map method that takes a lambda expression and returns a new table with the mapped values. I wo...
1
Solved
I created such a class
@Injectable FooService {
constructor(private _bar:BarService){
}
}
And extended it like this
@Injectable ExtFooService extends FooService {
constructor(private _bar...
Tubb asked 16/3, 2018 at 10:3
2
Solved
I get this error:
1) XTest::testX
array_merge(): Argument #1 is not an array
ERRORS!
Tests: 1, Assertions: 0, Errors: 1.
On this test case:
use PHPUnit\Framework\TestCase;
class XTest extends...
Roussillon asked 3/5, 2017 at 14:21
2
If I extend a class that implements Serializable, do I need that class to also implement Serializable?
For instance if I have,
public class classToBeExtended implements Serializable
Then will t...
Mikaela asked 15/11, 2017 at 20:27
2
We are translating old xml based configuration to Annotation based configuration
Situation
There is a class which is annotated as @Embeddable(ParentPk.java), another class extends this class whic...
Dhruv asked 26/3, 2015 at 12:17
6
Solved
interface Bouncable{ }
interface Colorable extends Bouncable{ }
class Super implements Colorable{ }
class Sub extends Super implements Colorable {} // Ok (case -1)
But,
class Sub implements C...
Umbrage asked 24/12, 2012 at 13:6
4
Solved
I need to create a base class that extends Activity which does some common tasks in my application and extend my activities from it,in the following form:
public BaseActivity extends Activity{.......
Morgan asked 11/1, 2012 at 14:48
2
Solved
Trying out ES6 and tried to create a class with static properties and function for parsing. Then I want to extend the base parser for each different type I am parsing. Not sure if I am doing a anti...
Tempest asked 13/10, 2015 at 12:44
2
For example why doesn't the following work?
Map<String, ? extends Object> table = new HashMap<>();
table.put("K", "V"); //Error V cannot be applied to ? extends String.
However Strin...
Tutankhamen asked 25/4, 2017 at 18:28
2
Solved
I have a very basic question.
The code below doesn't compile (assume Apple Extends Fruit):
List<? extends Fruit> numbers = new ArrayList<>();
numbers.add(new Apple()); //compile tim...
3
Solved
Lets say I have classes A and B, where B extends A. I also have a constructor in B with one argument which is of type A. I also have an object of type B called bObj.
Is there a way to call B.class....
Plutonium asked 22/11, 2012 at 8:42
2
Solved
I'm primarily a Java programmer, so this would be one of those "what is this thing from Java equivalent to in C#" questions. So, in Java, you can restrain a Class type argument at compile time to e...
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