264 questions
2
votes
1
answer
64
views
How to type hint a python factory method returning different types?
I am working on a generic framework with the goal to solve different but related problems. A problem consists of data and a bunch of algorithms operating on this data. Data and algorithms may vary ...
- 1,108
3
votes
0
answers
64
views
Container validation when using the factory methods in .NET Core DI
Let's say that we have the following 2 services:
class OtherService : IOtherService
{
}
public class ParameterizedService
{
public ParameterizedService(IOtherService otherService)
=> ...
- 4,831
0
votes
0
answers
53
views
Possible to intercept class instantiation in PHP?
Is there a way in PHP that, every time I instantiate a new class — e.g. $o = new SomeClass() — I can "intercept" that and actually return some other class?
Or, more specifically, I want to ...
- 2,249
1
vote
1
answer
134
views
Should/could I use Java abstract factory (or factory method) in this situation?
In a coding exercise I want to create a Java software for an hypothetical shop: I have a User superclass and three subclasses: administrator (who can manage the product catalog and the customer's list)...
- 13
0
votes
1
answer
56
views
Is there a simple way of accessing a function from another Activity in Android Studio
This is a quick question that I hope someone can help me out with. im fairly new to AS and I hope I am not over thinking this, but I'm a big beleiver in studying a topic fully, and have just spent the ...
- 126
-1
votes
1
answer
119
views
How to get factory method to return a derived class? [duplicate]
I am trying to make a factory method, but it is currently throwing an error:
core\loaders\loader.cpp:11:12: error: cannot convert 'Jpeg' to 'Loader*' in assignment
15 | loader = Jpeg(path);
...
- 36.6k
0
votes
4
answers
233
views
Why to use factory pattern
I am trying to understand the Factory Method design pattern and i have come across multiple questions similar to the one on my mind but my question still remains unanswered.
this is the article I am ...
- 105
0
votes
0
answers
56
views
Factory method with generics c# [duplicate]
I am trying to implement a factory method pattern with generics in c#. this is my code:
// IDomGen is just an empty interface that I just use as a "marker"
public abstract class AbsPersMySQL&...
- 35
2
votes
0
answers
58
views
How can we reduce a multi-functional class with conditional logic into fundamental classes with specific logic - C# ASP.NET Core
In an ASP.NET Core EF application, I have a CentralDesignObject with many types of related data, and a significant amount of derived / calculated values based on the information applied to the ...
- 53
-1
votes
1
answer
94
views
Do I need to overload the constructor | factory method for each combination of constructor's | factory method's arguments?
I have 4 instance variables that can be initialized by default, is the code written below appropriate? The number of constructors is growing a terrible pace, will I use the Builder object that have ...
- 85
1
vote
1
answer
139
views
Why is class and subclass reduction a particular consequence of the Prototype design pattern?
I read the Design Patterns book (written by the Gang of Four) and I'm now recapping on the Prototype Design pattern. In the consequence section, of the Prototype design pattern, (explained on page 119 ...
0
votes
2
answers
196
views
How to have Factory registry macros in the beginning of header files?
Currently, the Factory registry macro im using is at the bottom of the header file:
#pragma once
#include "GameObject.h"
class Foo : public GameObject
{
//...
};
ENGINE_SPAWNABLE(Foo);
...
user21681526
0
votes
1
answer
139
views
Identify the best architecture for sending different types email in ASP.NET Core
I have defined an interface IEmailManager as having send method. The email controller is using its concrete type EmailManager as a constructor dependency that sends the email.
public interface ...
- 130
0
votes
2
answers
393
views
Generator with factory method
I have a problem with the proper arrangement of services.I want to create a generator that, thanks to the provider, will create the corresponding generator object through the factory method.In my mind ...
- 1
1
vote
1
answer
98
views
Override the __init__ method of a base class to edit a string literal
So let's consider the following classes. I have no control over classes A, B, and C and can't change the implementation.
class A(object):
def __new__(cls, root=None):
if root == "Some ...
- 13