overriding

问题 If class Human inherits some methods from superclass Mammal unchanged (such as laysEggs: () -> false ) and overrides other methods (such as postsToStackOverflow : () -> true ), is there any difference between how the different methods are indicated in portion of the UML static class diagram for Human ? For example, are only the overridden methods shown in the box for Human , or are both shown, with some annotation for the overridden methods? 回答1: Now there is. Some anonymous got me to dig

问题 I have base class A public class A { public virtual void Method(A parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public virtual void Method(B parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } } Inhereted B public class B : A { public virtual void Method(object parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public override void Method(A parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public override void Method(B parameter) {

问题 There are several situations where you might override a super class's property. You declare a property with the same name and same attribute of its superclass'.(since if you change the attribute you can get an compiler warning).And you can synthesieze with an ivar that you create. What's the use of this? Or what's the harm can it do? If a superclass declares a property in a class extension (a category with no name), then it might not be in the header file. If you don't know that property from

问题 Let's suppose I have class User : public class User { private Long id; private String name; private Integer age; private BigDecimal account; // other fields, getters and setters } Is it proper to override the equals method as follows? @Override public boolean equals(Object ob) { if (ob == null) { return false; } if (this == ob) { return true; } if (ob instanceof User) { User other = (User) ob; return this.id.equals(other.getId()); } return false; } It turns out that the uniqueness of an

问题 I'm trying to override a property in a base class with a different, but derived type with the same name. I think its possible by covarience or generics but am not sure how to do it? The following code gets the error: Error 1 'Sun.Cache': type must be 'OuterSpace.Cache' to match overridden member 'OuterSpace.Cache' public class OuterSpace { public virtual OuterSpaceData Data {get; set;} public virtual OuterSpaceAnalysis Analysis {get; set;} public virtual OuterSpaceCache Cache {get; set;}

问题 I'm trying to override a property in a base class with a different, but derived type with the same name. I think its possible by covarience or generics but am not sure how to do it? The following code gets the error: Error 1 'Sun.Cache': type must be 'OuterSpace.Cache' to match overridden member 'OuterSpace.Cache' public class OuterSpace { public virtual OuterSpaceData Data {get; set;} public virtual OuterSpaceAnalysis Analysis {get; set;} public virtual OuterSpaceCache Cache {get; set;}

问题 I am trying to understand the object-oriented concepts in Fortran 2003 standards (or later). I have some knowledge in C++ so I think there are some common ideas between these two languages which can help me understand them better. In C++, the polymorphism is done through class derivation and member function overriding. One defines a "abstract" base class where almost all the virtual functions are defined. Different derived classes contains the actual implementation of them. So other functions

问题 I am trying to understand the object-oriented concepts in Fortran 2003 standards (or later). I have some knowledge in C++ so I think there are some common ideas between these two languages which can help me understand them better. In C++, the polymorphism is done through class derivation and member function overriding. One defines a "abstract" base class where almost all the virtual functions are defined. Different derived classes contains the actual implementation of them. So other functions

问题 Can someone guide me as to what is the proper method of overriding WooCommerce core Javascript files, specifically frontend files. I have not found any documentation on this and looking at the code, the path to the frontend script files is hard coded in the plugin so I doubt that placing an assets folder in my theme will do anything. What is the cleanest way to to this so that I can load a file located in my theme dir? Thanks 回答1: I had the same problem except with add-to-cart.js. Simple

问题 Can someone guide me as to what is the proper method of overriding WooCommerce core Javascript files, specifically frontend files. I have not found any documentation on this and looking at the code, the path to the frontend script files is hard coded in the plugin so I doubt that placing an assets folder in my theme will do anything. What is the cleanest way to to this so that I can load a file located in my theme dir? Thanks 回答1: I had the same problem except with add-to-cart.js. Simple