Recent questions tagged inheritance

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inheritance - Python Method overriding, does signature matter?

Lets say I have class Super(): def method1(): pass class Sub(Super): def method1(param1, param2, ... each override method1 with different params See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - In Python, how do I indicate I'm overriding a method?

In Java, for example, the @Override annotation not only provides compile-time checking of an override but makes for ... an override in Python? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Convert data type from inherited classes in C#

I am trying to understand inheritance for my unity project but seem to have found a limitation to my setup. I ... trying to follow it all. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Can I construct a JavaScript object without using the new keyword?

Here is what I'd like to do: function a() { // ... } function b() { // Some magic, return a new object. ... -> true a() instanceof a // -> true See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - When to use val or def in Scala traits?

I was going through the effective scala slides and it mentions on slide 10 to never use val in a trait for ... in a trait for abstract methods See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Overriding properties in python

So, I'm trying to figure out the best (most elegant with the least amount of code) way to allow ... what should the foo function return? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Abstract classes in Swift Language

Is there a way to create an abstract class in the Swift Language, or is this a limitation just like Objective ... defines as an abstract class. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Can an interface extend multiple interfaces in Java?

Can an interface extend multiple interfaces in Java? This code appears valid in my IDE and it does compile: ... be an exception for interfaces? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Superclass reference not able to call subclass method in Java

I have a basic doubt in polymorphism in Java. I have written the code below in one file named AnimalTestDrive.java. ... IS NOT WORKING** } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - PHP: How to call function of a child class from parent class

How do i call a function of a child class from parent class? Consider this: class whale { function __construct() { // ... "So you managed to call me !!"; } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - In Java, how do I call a base class's method from the overriding method in a derived class?

I have two Java classes: B, which extends another class A, as follows : class A { public void myMethod() { /* . ... 't know how to do this basic thing in Java. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Should all Python classes extend object?

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Including another class in SCSS

I have this in my SCSS file: .class-a{ display: inline-block; //some other properties &:hover{ color: ... a, but that just throws an error when compiling. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Ruby: kind_of? vs. instance_of? vs. is_a?

What is the difference? When should I use which? Why are there so many of them? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Why does the "protected" modifier in Java allow access to other classes in same package?

What is the reason that in Java, a member with a "protected" modifier can not only be accessed by the same ... reasons, not actual applications (e.g., testing) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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863 views

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inheritance - Initialize parent's protected members with initialization list (C++)

Is it possible to use the initialization list of a child class' constructor to initialize data members declared as ... so, what is the syntax? Many thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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663 views

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inheritance - Python super() raises TypeError

In Python 2.5, the following code raises a TypeError: >>> class X: def a(self): print "a" >>> class Y( ... ), it will work. What's the explanation for this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Overriding a Base's Overloaded Function in C++

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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691 views

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inheritance - Subclassing int in Python

I'm interested in subclassing the built-in int type in Python (I'm using v. 2.5), but having some trouble ... 'm not really sure what I should be searching for Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Explicitly calling a default method in Java

Java 8 introduces default methods to provide the ability to extend interfaces without the need to modify existing ... ) from a method of class B? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - What is an interface in Java?

Just as a counterpoint to this question: what is an interface in Java? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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714 views

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inheritance - C# constructor execution order

In C#, when you do Class(Type param1, Type param2) : base(param1) is the constructor of the class executed ... or does it call the base constructor first? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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625 views

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inheritance - How to use base class's constructors and assignment operator in C++?

I have a class B with a set of constructors and an assignment operator. Here it is: class B { public: B() ... has to access all of B's private member variables. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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672 views

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inheritance - Python extending with - using super() Python 3 vs Python 2

Originally I wanted to ask this question, but then I found it was already thought of before... ... __init__(self): ConfigParser.SafeConfigParser.__init__(self) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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872 views

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inheritance - C# Error: Parent does not contain a constructor that takes 0 arguments

My code is public class Parent { public Parent(int i) { Console.WriteLine("parent"); } } public class Child ... ? Why doesn't the code work without it? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Cast base class to derived class python (or more pythonic way of extending classes)

I need to extend the Networkx python package and add a few methods to the Graph class for my particular ... the problem in a completely different manner? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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654 views

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inheritance - C#: Overriding return types

Is there way to override return types in C#? If so how, and if not why and what is a recommended way of ... But what would you recommend as a solution to this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

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inheritance - Java dynamic binding and method overriding

Yesterday I had a two-hour technical phone interview (which I passed, woohoo!), but I completely muffed up the ... type of the reference. What am I missing? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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