extends Questions

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TestRepository extends JpaRepository<Test, Long> JpaRepository is an interface. Why do we extend it and not implement it as we know in Java? As far as I know, interfaces are implemented, not...
Aguirre asked 15/11, 2019 at 16:36

5

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Here is the thing. I have a main class called A. I want this class to extend class B. class A extends B {} But in fact, I want the class B to extend C, D or E on a specific condition: class B e...
Leipzig asked 4/3, 2017 at 18:16

12

I want to save my time and reuse common code across classes that extend PIXI classes (a 2d webGl renderer library). Object Interfaces: module Game.Core { export interface IObject {} export inter...
Disyllable asked 15/11, 2014 at 17:9

1

I am working with some legacy code moved into my new react product. Essentially I have a large grouping of widgets (a lot!) so my employer has asked me NOT to rewrite them but work with them. I hav...
Retake asked 10/3, 2021 at 0:27

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I would like to know what Man and Child have in common and how they differ. class Person { name: string; age: number; } class Child extends Person {} class Man implements Person {}
Order asked 8/8, 2016 at 16:49

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Let's say there are base_a.html, base_b.html, a.html, b.html, c.html. a.html extends base_a.html and b.html extends base_b.html. And c.html has to extend both base_a.html and base_b.html. It will...

7

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How do I call a super constructor in Dart? Is it possible to call named super constructors?
Mascara asked 7/11, 2012 at 14:46

2

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Let's say the following type is defined: interface Shape { color: string; } Now, consider the following ways to add additional properties to this type: Extension interface Square extends Shap...
Wyrick asked 6/10, 2018 at 16:56

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I want to achieve this animation with TextField: but getting this instead: Here is my TextField widget: import 'package:flutter/material.dart'; import 'package:line_awesome_flutter/line_awesome_f...
Smallpox asked 31/7, 2021 at 6:33

2

When I specify an enum like this: enum Color { RED } The generated code javap -p Color looks like this: final class Color extends java.lang.Enum<Color> { public static final Color RED; pri...
Namedropper asked 20/4, 2022 at 14:51

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In Codeigniter 2.1.2 I want to create base controller and then extends from this controller. It does not work and I have no idea why and I'm pretty desperate now. In \application\core\MY_Base_Cont...
Ascension asked 25/1, 2014 at 14:31

5

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Suppose I have a pure abstract class (that is, an abstract class without any implementation): abstract class A { abstract m(): void; } Like in C# and Java, I can extend the abstract class: cla...
Chancellorship asked 14/3, 2016 at 14:40

3

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In my flutter mobile application, I use a PopupMenuButton placed at the bottom of the view. If I click on it, the soft keyboard is dismissed because the text input looses the focus I guess. So the ...
Doughty asked 11/11, 2019 at 12:28

3

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When extending a class, I can easily add some new properties to it. But what if, when I extend a base class, I want to add new properties to an object (a property which is a simple object) of the b...
Scent asked 6/12, 2021 at 18:21

3

I am studying classes extends in kotlin and I came across this error. Can you please explain to me why this is so: open class Animal class Zebra: Animal() fun main() { var animal = Zebra() anima...
Kanya asked 28/11, 2021 at 12:42

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Im building my app with VueJS and Vuex and I'm facing the issue when I have Multiple modules using the same data fields. Its about API configuration like dat. getUsers ({ state, commit }) { axios...
Gaultheria asked 18/1, 2018 at 17:38

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I am currently transforming from Java to Javascript, and it's a bit hard for me to figure out how to extend objects the way I want it to do. I've seen several people on the internet use a method ca...
Neighboring asked 3/5, 2012 at 11:18

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I have many different schemas, however there are a set of fields which every schema contains. I was wondering if there was a way to have a different schema extend a parent schema and inherit its fi...
Inducement asked 25/3, 2015 at 18:21

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I have 3 classes in WordPress (the question itself is unrelated to it): class WP_Widget class Theme_Widget extends WP_Widget class Specific_Widget extends Theme_Widget Essentially Theme_Widget...
Armindaarming asked 9/6, 2010 at 14:59

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I have a type User. Users can also be a type TeamMember. The only difference between a User and TeamMember is an added field teamRole: String. So, I’d love to do something like the following to avo...
Rooftree asked 28/11, 2017 at 3:14

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I have 3 files structure in the following order all of which contain 1 class main.js extends events events.js extends base base.js I've looked into these answers but my problem doesn't appear to...
Astrolabe asked 8/8, 2019 at 9:20

2

I have two classes A and B extend A. class A{ String a; A(); } class B extends A{ String b; B(); } How to getA Like: B getA(){ return A(); } Or B b = A(); My Code : Future<B> getB()...
Leishmaniasis asked 27/10, 2020 at 14:23

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Please explain in an easy to understand language or a link to some article.
Telegraphic asked 31/5, 2012 at 18:25

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I am new to Kotlin and trying out to write some project using the language. I am using Java library and extending a class from the library in my project and I am seeing this error message. 'public'...
Caudate asked 28/10, 2018 at 7:34

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In java, to make a function that returns an object that is the same type as a parameter and extends a certain class, I would type: public <T extends MyClass> T foo(T bar) {...} Is there a ...
Redmer asked 6/6, 2015 at 20:31

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