downcast

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Should downcasting be avoided while using a class hierarchy in C++?

Let\'s say I\'m writing an application which works with 开发者_如何学Pythonprojects, and exposes different functionality depending on the type of the project. I have a hierarchy of classes for the dif[详细]

2023-02-03 09:50 分类：问答
Accessing a submethod of an argument of an overriden method in android?

This must be a noob question, but I can\'t find the proper wait to achieve the following: In android, I made a subclass MyView extending a View class. In B, I\'ve defined a method mMethod not present[详细]

2023-01-26 06:20 分类：问答
static_cast on derived classes when base turns from not polymorphic to polymorphic

I am reviewing C++ casts operator and I have the following doubt: for polymorphic classes I I should use polymorphic_cast[详细]

2023-01-22 07:44 分类：问答
Why can't I downcast pointer to members in template arguments?

If I make a pointer-to-base-member, I can convert it to a pointer-to-derived-member usually, but not when used within a template like Buzz below, where the first template argument influences the secon[详细]

2023-01-21 07:06 分类：问答
How do I down-cast a c++ object from a python SWIG wrapper?

The problem: I\'ve wrapped some c++ code in python using SWIG. On the python side, I want to take a wrapped c++ pointer and down-cast it to be a pointer to a subclass. I\'ve added a new c++ function t[详细]

2023-01-19 23:20 分类：问答
Cant copy construction be done without creating an explicit function in the pure virtual base class?

My objective is to do a deep copy of a class, but a virtual class is causing trouble. #include<iostream>[详细]

2023-01-18 02:58 分类：问答
C++ cannot convert from base A to derived type B via virtual base A

I have four classes: class A {}; class B : virtual public A {}; class C : vi开发者_如何学JAVArtual public A {};[详细]

2023-01-16 23:05 分类：问答
How can I do a safe downcast and prevent a ClassCastException

I have the following s开发者_Python百科cenario: public class A { } public class B extends A { } public class C extends B {[详细]

2023-01-08 12:18 分类：问答
C++ inheritance question

I have the following problem in application arch开发者_如何学JAVAitecture and am willing to solve it (sorry for a lot of text).[详细]

2023-01-07 00:07 分类：问答
Java downcasting and is-A has-A relationship

HI, I have a down casting question, I am a bit rusty in this area. I have 2 clasess like this: class A{ int i; String j ; //Getters and setters}[详细]

2022-12-30 18:57 分类：问答