Recent questions tagged Polymorphism

0 votes

421 views

1 answer

polymorphism - Best Practice For List of Polymorphic Objects in C++

What is a common practice for the storage of a list of base class pointers each of which can describe a ... solutions out there! Thank you See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

323 views

1 answer

polymorphism - How to comfortably deal with the type system on Haskell?

Haskell's type system is powerful and liked for its mathematical rigorousness and logical soundness, on the other ... x6 is unsatisfied here. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

365 views

1 answer

polymorphism - Rails 4 Polymorphic associations and concerns

I'm trying to add an Evaluation model to my Rails 4 app. I have made a model called evaluation.rb. ... person who should receive the evaluation? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

367 views

1 answer

polymorphism - Can I mimic multiple passed-object dummy arguments in Fortran?

I would like to write a procedure which takes two passed-object dummy arguments, such as module m type, abstract ... (Child) from class(Parent)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

432 views

1 answer

polymorphism - Overriding vals in Scala

I have tried to override val in Scala as this: trait T{ val str: String } sealed abstract class Test extends ... pass it as a class parameter. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

605 views

1 answer

polymorphism - Make OCaml function polymorphic for int lists and float lists

Is there a way to create a polymorphic add function in OCaml that works equally well for ints and floats? So for ... one. Thanks for the help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

390 views

1 answer

polymorphism - Can't use virtual and override on the same method in C#

So apparently you cannot use the virtual modifier with the override modifier. virtual - a method that can be ... of virtual and override? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

392 views

1 answer

polymorphism - Calling method from java child class not in parent class

Consider the following base/derived classes: public class Car { private int cylinders; public Car(int cyl) { ... uses the over-ridden method? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

618 views

1 answer

polymorphism - What does 'has virtual method ... but non-virtual destructor' warning mean during C++ compilation?

#include <iostream> using namespace std; class CPolygon { protected: int width, height; public: virtual int area () { ... } ~CRectangle(){} }; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

298 views

1 answer

polymorphism - Existential vs. Universally quantified types in Haskell

What exactly is the difference between these? I think I understand how existential types work, they are like ... are universal types different? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

313 views

1 answer

polymorphism - Metamorphic Code Examples

I understand the concept of Polymorphic and Metamorphic code but I recently read the Wikipedia page on both (for ... to make metamorphic code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

453 views

1 answer

polymorphism - “overriding” private methods with upcasting call in java

public class PrivateOverride { private void f() { System.out.println("PrivateOverride f()"); } public static void main ... , It confuse me now ! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

287 views

1 answer

polymorphism - Inheritance in curiously recurring template pattern polymorphic copy (C++)

I'm using CRTP to add a clone method to inherited classes, for example: class Base { virtual ~Base() {}; ... to fix this? Thanks for reading! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

467 views

1 answer

polymorphism - C++: Why does a structclass need a virtual method in order to be polymorphic?

Following this question, I'm wondering why a structclass in C++ has to have a virtual method in order to ... to have a virtual method? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

397 views

1 answer

polymorphism - polymorphic C++ references

I was wondering how you can do polymorphism with references, as opposed to pointers. To clarify, see the ... come up with this solution. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

442 views

1 answer

polymorphism - Why is OCaml's (+) not polymorphic?

I am an OCaml newbie. I like OCaml's speed but I don't fully understand its design. For example, I would like the ... so on. Why do we need +.? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

360 views

1 answer

polymorphism - Is there any reason that Java uses late/static binding for overloaded methods in the same class?

Is there any specific reason why Java uses early binding for overloaded methods? Wouldn't it be possible to ... rather expect: INTEGER OBJECT See Question&Answers more detail:os...

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

0 votes

456 views

1 answer

polymorphism - When to mark a function in C++ as a virtual?

Because of C++ nature of static-binding for methods, this affects the polymorphic calls. From Wikipedia: Although ... code to run as expected? See Question&Answers more detail:os...

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

0 votes

364 views

1 answer

polymorphism - C++: How to implement polymorphic object creator to populate a table

I have a table widget object that can be resized with set_num_col(int) and set_num_row(int). A call to each ... widget in a better way? Thanks See Question&Answers more detail:os...

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

0 votes

323 views

1 answer

polymorphism - SWIG Java Retaining Class information of the objects bouncing from C++

Ok, there's a keyword that I've intentionally kept away from the tags and the title. That's "Android", but ... keep it under control for now. See Question&Answers more detail:os...

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

0 votes

440 views

1 answer

polymorphism - Does Haskell have return type overloading?

Based on what I've read about Haskell, and the experimentation I've done with GHC, it seems like ... Haskell had return type overloading See Question&Answers more detail:os...

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

0 votes

421 views

1 answer

polymorphism - Must ASP.NET MVC Controller Methods Return ActionResult?

Being new to ASP.NET MVC, I've been wondering about the signature of Controller methods. In all the ... methods with specific return types? See Question&Answers more detail:os...

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

0 votes

447 views

1 answer

polymorphism - When is a vtable created in C++?

When exactly does the compiler create a virtual function table? 1) when the class contains at least one virtual ... C get dynamic polymorphism? See Question&Answers more detail:os...

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

0 votes

412 views

1 answer

polymorphism - Haskell: How to create most generic function possible that applies a function to tuple items

This is a personal exercise to understand the limits of Haskell's type system a little better. I want to ... a more specific type signature. See Question&Answers more detail:os...

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

0 votes

618 views

1 answer

polymorphism - C++ abstract class without pure virtual functions?

I have a base class class ShapeF { public: ShapeF(); virtual ~ShapeF(); inline void SetPosition(const ... without the pure virtual functions. See Question&Answers more detail:os...

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

Categories

Just Browsing Browsing

Most popular tags