All Questions
Tagged with inheritance object
718
questions
4
votes
1
answer
94
views
Assign base object without changing inherited ones?
How valid is it to assign a new object to a base one, without changing the inherited ones?
The example below works as expected, but is it by chance?
This example is simple, but is there any situation ...
- 684
0
votes
1
answer
79
views
Why is there no error if a class defines a member with the same name and type as the class it inherits? Which of the two members is used? [duplicate]
I am currently learning programming in university and I was messing around and wrote this code and I got curious:
class Student{
public:
string name;
string address;
};
class Instructor: ...
- 11
0
votes
1
answer
78
views
Request for member which is of non-class type void*
I am trying to do a pointer to generic object type of thing but i don't get how to access the arbitrary object method.
I tried definining an interface
class InterfaceProtocol{
public:
virtual ...
2
votes
1
answer
91
views
Should name mangling be used in classes that are inherited by other subclasses?
I'm trying to create classes and subclasses in python with "protected" attributes using name mangling (__). However, when I try to extend the functionality of classes further with different ...
0
votes
1
answer
146
views
Dealing with the Diamond Problem in Python
I'm working on a project where I need to implement multiple inheritance in Python, and I'm concerned about encountering the "diamond problem." I want to make sure I handle it properly to ...
- 11
0
votes
0
answers
67
views
Dealing with the Diamond Problem in Python: Implementing Multiple Inheritance Safely
I'm working on a project where I need to implement multiple inheritance in Python, and I'm concerned about encountering the "diamond problem." I want to make sure I handle it properly to ...
- 11
0
votes
1
answer
36
views
Declaring and initializing object of type child class in its base class
What's the name of the code smell committed by the following code. I try to google around to find the de-facto name of the following code smell to no avail.
The reason why I'm searching for it is ...
- 2,985
0
votes
1
answer
34
views
How Inheritance is used to set values?
In below code , Level class have a construtor where it uses super.
When happens when object is created with the value ?
I'm literally confused, even can't explain what's my doubt please explain the ...
0
votes
1
answer
82
views
Class inheritance issue: Unsupported operand types for * 'float', and 'class'
I am new to python, and exploring the class inheritance feature. In my code attached here, I have two classes, by the names "Waveguide" and "taper". The attributes for the ...
- 1
0
votes
1
answer
43
views
Why is the compiler not throwing error when Assigning object of sub class to parent reference
class Base {
public void show() {
System.out.println("Base class show() method called");
}
}
class Derived extends Base {
public void show() {
System.out.println(...
- 39
1
vote
1
answer
98
views
Creating child classes that only inherit parents data once
Currently I'm trying to create some attribute let's call it "DoNotShareWithGrandChildren" that will be used by the highest level parent class but not the children classes below it. The issue ...
- 81
0
votes
1
answer
78
views
Difference between "SuperInterface of an Interface" vs "Direct SuperInterface of an Interface" in Java?
How can an Interface override a method of Object class? Why 'Collection' Interface Overrides equals(Object o) method and hashCode() method of Object class?
https://docs.oracle.com/en/java/javase/11/...
- 25
1
vote
2
answers
307
views
How to enforce constructor signature across sub-classes?
I want to dynamically instantiate sub-classes of a given class, and I need a consistent signature for the sub-classes' constructors to avoid errors at runtime.
Constructors can be defined with ...
- 1,786
2
votes
1
answer
271
views
dataclass __annotation__ not working with inheritance
I tried this code:
from dataclasses import dataclass
@dataclass
class Data1:
d11: str
d12: float
@dataclass
class Data2:
d21: str
d22: float
@dataclass
class D3(Data1, Data2): pass
...
- 636
1
vote
0
answers
499
views
Derived class is not able access Base class variable [duplicate]
#include<iostream>
#include<cstdio>
#include<vector>
#define MAX_SIZE 100
using namespace std;
template<class T>
class Base{
public:
int top = 0;
};
template<class T&...
