interface

问题 We are interfacing with an externally controlled program with defined headers containing enumerations, and structures. We want to be able to interface with multiple versions of this program with as little duplication of code as possible. Each version has the same general enums and structures, but with slight modifications over time. In the ideal setup we could just conditionally include the different versions of the same header (i.e. if interfacing with version 1 #include "version1\progDefs.h

问题 I have a problem with using inherited interface. I will explain my problem on example below. Let's say I have Interface IFlyable : public interface IFlyable { IVerticalSpeed Speed { get; set; } } It contains IVerticalSpeed interface. I created another interface called ISpeed which inherits from IVerticalSpeed interface: public interface ISpeed : IVerticalSpeed { int MaxSpeed { get; set; } } In next step I created a class Fly which implement IFlyable interface: public class Fly : IFlyable {

问题 I have a problem with using inherited interface. I will explain my problem on example below. Let's say I have Interface IFlyable : public interface IFlyable { IVerticalSpeed Speed { get; set; } } It contains IVerticalSpeed interface. I created another interface called ISpeed which inherits from IVerticalSpeed interface: public interface ISpeed : IVerticalSpeed { int MaxSpeed { get; set; } } In next step I created a class Fly which implement IFlyable interface: public class Fly : IFlyable {

问题 I am learning about empty interfaces. I find that while there are many explanations—also on Stackoverflow—on meaning of an empty interface and how they work, there's very little information on best-practices on when / why to use them, when to avoid, what the considerations are, and the pros and cons of chosing to use them. In Go chatrooms I've read some talk about best to avoid using empty interfaces where possible, but without the proper arguments. Others proudly responding they had zero

问题 After much searching, I found what I believe to be the closest answer to my problem is on Stack Overflow (SO) at Fortran interface to call a C function that return a pointer, (posted nearly 10 years ago!) I quote this because using that example keeps the code simple and still illustrates my problem. I want to return an array that has been created/memory allocated in C++ and be able to analyse the answer in Fortran, because that is where the bulk of the code for this application lies. My

问题 When not running an application, pressing F12 (Go To Definition) on a method on an interface type will take you to the interface itself. Is there any key combo that exists (or one that I can make) that will allow me to provide a default implementation to jump to, or allow me to quickly pick an implementation to go to? We have several layers in our application, and it would save a lot of time to be able to jump straight to the Mock or Real implementations rather than navigating to them in

问题 I'm getting to know Angular, TypeScript and RxJS. I have an http request that returns a JSON. In this JSON there is data that I need to construct my defined object. Let's say, that my object is this: export class RegularUser { constructor( public id: number, public firstName: string, public lastName: string, public token: string ) {} } Now, I am sending a request to some API, which returns data in this format: { success: boolean, uid: number, first_name: string, last_name: string, cid: number

问题 I am a new to AIDL interface. I would like to implement AIDL interface between Java(Application layer) which is build using gradle and C++(Native layer) which is build using cmake. I need to pass a chunk of data between these two processes using AIDL interface. I am able to implement a .aidl file in application layer and able to create a service. I need to implement a aidl client in native layer and need to pass data. Can anyone suggest me how to implement AIDL which is to be build cmake. 回答1

问题 I am a new to AIDL interface. I would like to implement AIDL interface between Java(Application layer) which is build using gradle and C++(Native layer) which is build using cmake. I need to pass a chunk of data between these two processes using AIDL interface. I am able to implement a .aidl file in application layer and able to create a service. I need to implement a aidl client in native layer and need to pass data. Can anyone suggest me how to implement AIDL which is to be build cmake. 回答1

问题 interface A { public void doSomething(); } interface B extends A { public void doSomethingElse(); } public class AClass implements A, B { public void doSomething() {} public void doSomethingElse() {} } Why does Java permit such a declaration? What's the use of implementing both interfaces when same thing can be achieved by implementing the SubInterface (B)? 回答1: I think the "why" question can only be answered by Java designers. One reason might be that it permits retrofitting extends A to B