Questions tagged [multiple-inheritance]
A feature of some object-oriented computer programming languages in which a class can inherit behaviors and features from more than one superclass or base class.
multiple-inheritance
2,743
questions
1
vote
2
answers
19
views
Does multiple data processing violate the principle of interface separation?
I have the code.
@startuml
interface DbReader{
{abstract} read()
}
interface DbWriter{
{abstract} write(obj)
}
class DbConcrete {
read()
write(obj)
}
DbConcrete .up.|> DbReader
DbConcrete .up.|...
0
votes
2
answers
62
views
multiple inheritance without defining a class [duplicate]
I'm not sure that's possible, and I'm wondering if that's the way to go, or if there exists a better way of doing that.
I'll create a toy example to expose what I'm looking for.
Suppose I have people ...
- 354
-1
votes
2
answers
85
views
The operators for my derived class do not work as intended
I made this code that has 4 classes. The SpecialCharacter class has 2 bases, Hero and Enemy, both of which have Person as their base class.
#include <iostream>
class Person {
private:
char* ...
- 23
2
votes
1
answer
84
views
Override function with variadic template inheritance
I have a class that inherits from 2 sets of base classes, according to variadic template arguments. One of those sets defines a virtual function. I want to do something like this but I'm not sure how ...
- 199
1
vote
1
answer
96
views
Python Multiple Inheritance generates "TypeError: got multiple values for keyword argument"
I'm running into a problem using multiple inheritance in Python. In my code, Child class A inherits from two Parent classes, B and C, both abstract base classes. Each of the Parent classes, B and C, ...
- 15
1
vote
1
answer
44
views
How should I write Google-Truth Subjects for an object heirarchy that uses interfaces for multiple-inheritance?
The situation
I'm writing tests for a personal project (in Java17 using JUnit5/Jupiter and Google Truth ) where I use the multiple-inheritance of interfaces to define classes. For example:
Example
...
- 11
0
votes
0
answers
78
views
How to properly inherit from multiple interfaces which declare signals and slots in Qt 6
I want to have two different interface classes that declare signals and pure virtual slots, and have a implementation class that implements both of them and thus inherits their individual signals and ...
- 117
0
votes
1
answer
30
views
How can I create an adapter that can adapt between two different data machine classes
A class that stores and handles access to some machine of type A:
class DataMachineA:
def __init__(self):
# some dummy data
self.data = {"type": ["A", "A&...
1
vote
2
answers
71
views
C++ multiple inheritance- class method running twice
I have an exercise to practice multiple inheritance and polymorphism and something is not going well.
The exercise includes 4 classes I need to build:
Creature
char * name
int age
int ...
- 21
4
votes
1
answer
100
views
Why is there a difference between an operator and the corresponding member function?
Why is there a difference between the operator call and the corresponding member function call with Clang 17.0.1? Shouldn't they behave the same way?
#include <iostream>
struct A {
void ...
- 6,346
3
votes
2
answers
74
views
C++ Runtime polymorphism calling unexpected override when multiple classes are inherited
I am trying to create a GUI system with C++11 where, perhaps like Godot, every "node" has a very specific purpose such as grouping other nodes, drawing a rectangle, or detecting when a ...
0
votes
0
answers
30
views
Java Swing problems with invoking paintComponent() in Sub-Subclass?
I want to paint node structures with Java Swing.
There's a class
NodeView extends JPanel
and three subclasses representing individual tree structures.
These subclasses are extending NodeView (e.g. ...
- 1
0
votes
1
answer
37
views
Multiple inheritance: how to correctly override a method? The complementary of the complementary of an object
TL; DR
I'm trying to implement the complementary of the complementary of a spatial region
The current solution works with a huge side effect
The solution is based on multiple inheritance. Which doesn'...
0
votes
0
answers
18
views
Python super().__init__() doesn't call multiple inherited classes? [duplicate]
In my example i have two classes FirstClass SecondClass
class FirstClass():
def __init__(self) -> None:
print("First class instance creation")
pass
class ...
- 11
5
votes
1
answer
217
views
Is it legal to zero empty C++ classes in the constructor and inherit from them?
It is not very rare to find a library that zeros its objects in the constructors using memset. And sometimes it happens to empty classes as well. Is it safe, especially when one inherits such classes?
...
- 19.2k