multiple-inheritance

Inheritance from multiple interfaces with the same method name

由 ☆樱花仙子☆ 提交于 2019-11-26 03:35:51
问题 If we have a class that inherits from multiple interfaces, and the interfaces have methods with the same name, how can we implement these methods in my class? How can we specify which method of which interface is implemented? 回答1: By implementing the interface explicitly, like this: public interface ITest { void Test(); } public interface ITest2 { void Test(); } public class Dual : ITest, ITest2 { void ITest.Test() { Console.WriteLine("ITest.Test"); } void ITest2.Test() { Console.WriteLine(

Multiple inheritance/prototypes in JavaScript

由 ⅰ亾dé卋堺 提交于 2019-11-26 03:29:55
I've come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.) I just want to know if anyone's attempted this with any (or not) success, and how they went about it. To boil it down, what I really need is to be able to have an object capable of inheriting a property from more than one prototype chain (i.e. each prototype could have its own proper chain), but in a given order of precedence (it will search the chains in order for the

Should C# have multiple inheritance? [closed]

由 隐身守侯 提交于 2019-11-26 03:09:56
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I have come across numerous arguments against the inclusion of multiple inheritance in C#, some of which include (philosophical

How do Java Interfaces simulate multiple inheritance?

由 无人久伴 提交于 2019-11-26 02:41:11
问题 I am reading \"The Java Tutorial\" (for the 2nd time). I just got through the section on Interfaces (again), but still do not understand how Java Interfaces simulate multiple inheritance. Is there a clearer explanation than what is in the book? 回答1: Suppose you have 2 kinds of things in your domain : Trucks and Kitchens Trucks have a driveTo() method and Kitchens a cook() method. Now suppose Pauli decides to sell pizzas from the back of a delivery truck. He wants a thing where he can driveTo(

Why should I avoid multiple inheritance in C++?

由 只谈情不闲聊 提交于 2019-11-26 01:56:04
问题 Is it a good concept to use multiple inheritance or can I do other things instead? 回答1: Multiple inheritance (abbreviated as MI) smells , which means that usually , it was done for bad reasons, and it will blow back in the face of the maintainer. Summary Consider composition of features, instead of inheritance Be wary of the Diamond of Dread Consider inheritance of multiple interfaces instead of objects Sometimes, Multiple Inheritance is the right thing. If it is, then use it. Be prepared to

Multiple inheritance/prototypes in JavaScript

由 自古美人都是妖i 提交于 2019-11-26 01:53:07
问题 I\'ve come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I\'m not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.) I just want to know if anyone\'s attempted this with any (or not) success, and how they went about it. To boil it down, what I really need is to be able to have an object capable of inheriting a property from more than one prototype chain (i.e. each prototype could have

Why to use Interfaces, Multiple Inheritance vs Interfaces, Benefits of Interfaces?

由 十年热恋 提交于 2019-11-26 01:33:20
问题 I still have some confusion about this thing. What I have found till now is (Similar questions have already been asked here but I was having some other points.) Interface is collection of ONLY abstract methods and final fields. There is no multiple inheritance in Java. Interfaces can be used to achieve multiple inheritance in Java. One Strong point of Inheritance is that We can use the code of base class in derived class without writing it again. May be this is the most important thing for

What is the exact problem with multiple inheritance?

由 夙愿已清 提交于 2019-11-26 01:13:47
问题 I can see people asking all the time whether multiple inheritance should be included into the next version of C# or Java. C++ folks, who are fortunate enough to have this ability, say that this is like giving someone a rope to eventually hang themselves. What’s the matter with multiple inheritance? Are there any concrete samples? 回答1: The most obvious problem is with function overriding. Let's say have two classes A and B , both of which define a method doSomething . Now you define a third

How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?

由 瘦欲@ 提交于 2019-11-26 00:58:05
问题 class A { public: void eat(){ cout<<\"A\";} }; class B: virtual public A { public: void eat(){ cout<<\"B\";} }; class C: virtual public A { public: void eat(){ cout<<\"C\";} }; class D: public B,C { public: void eat(){ cout<<\"D\";} }; int main(){ A *a = new D(); a->eat(); } I understand the diamond problem, and above piece of code does not have that problem. How exactly does virtual inheritance solve the problem? What I understand: When I say A *a = new D(); , the compiler wants to know if

Why do multiple-inherited functions with same name but different signatures not get treated as overloaded functions?

由 情到浓时终转凉″ 提交于 2019-11-26 00:25:43
问题 The following snippet produces an \"ambigious call to foo\" error during compilation, and I\'d like to know if there is any way around this problem without fully qualifying the call to foo: #include <iostream> struct Base1{ void foo(int){ } }; struct Base2{ void foo(float){ } }; struct Derived : public Base1, public Base2{ }; int main(){ Derived d; d.foo(5); std::cin.get(); return 0; } So, question is as the title says. Ideas? I mean, the following works flawlessly: #include <iostream> struct
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