All Questions
47 questions
2votes
3answers
261views
What is the relationship between the terms "association", "aggregation", and "composition"? [closed]
I try to brush up on my technical interview skills as I plan to seek a better offer I don't recall being ever asked that really, but I still want to clear up any confusion. What is association, ...
- 1,549
0votes
2answers
275views
What is a good architecture / design pattern for giving multiple shared attributes in different combinations?
I have a need for many different objects to have various combinations of attributes. For a demonstrative example, a flaming dog would have a dog attribute, a flame attribute, and a tail attribute, ...
- 111
0votes
1answer
163views
Separation of concerns: persisting complex types
I have the following module structure: core persistence extension In my core module, I have an interface: Handler. This interface has multiple implementations in the core module as well as extension ...
- 111
1vote
2answers
423views
MVC-like architecture: Model-Controller communication of results/status
I'm struggling on designing a solid architecture for my project. In particular, I don't know how to handle the communication between the models and the controllers. My goals are: Following the ...
- 29
0votes
3answers
157views
What should be the optimal management of end user messages in N-tier architecture?
I'm curious about your thoughts on this subject that we have discussed with the people around me. Especially at the architectural stage, in which layer is the most optimal and efficient way to use the ...
- 13
1vote
2answers
122views
Designing UI module for an application
I have an UI module that will expose only one class - UserInterface. The class will be responsible for collecting user input and providing output (command line UI style). From logical way of thinking, ...
- 33
-1votes
2answers
176views
Robins magic Chess game: Where to put/split the behaviour to full fill Law of Demeter [closed]
So now i have a really concrete example; its highly related to that question here: Tell one, but ask the others? the important statements there are: In the comment section https://softwareengineering....
-1votes
1answer
115views
Different composition techniques from the perspective of the client
There exists different composition arts/techniques, i will present in the following some of them. The question then is do you know more techniques additional to my presented ones? And then the ...
0votes
3answers
486views
Tell one, but ask the others?
Consider we have three classes which want to collaborate, then, where is the behaviour? I guess it can only be in one of the three classes or in a fourth one acting than as a procuedural connector-...
-1votes
3answers
163views
Chain of responsibility look alike but choose handler at runtime
Currently I have an structure of PopUps and I've been thinking to use Chain of Responsibility pattern, but the difference is a popup can back to previous one PopUp and also can go to any other PopUp. ...
0votes
3answers
328views
How to choose between these different options for communicating between objects?
I have a few objects that should communicate between each other. I also want to have my code unit tested. I am questioning how I should handle their communication: Should I make one instantiate the ...
- 2,818
2votes
1answer
507views
Converter implementation in Python: class versus module?
I've written a little library that uses the builtin ast library to convert between functions, docstrings, argparse .add_argument, classes, and [soon] more. Stubs look something like this, with ir ...
- 131
0votes
1answer
582views
Object Oriented Design of Callback Methods
Assume that there is a library and it provides an interface to its users in order to callback them. Users implement this interface and receive notifications from the library. Let's say, ICallback is ...
1vote
1answer
625views
Ideas for designing a system for processing status updates [closed]
Given that this question is related to my work, I will simplify what I need to do. The system consists of 4 primary types of statuses (internally, we call them events): Working, not operating ...
- 135
0votes
1answer
180views
How to bring a code to conformance with tell, don't ask without creating tons of methods on other classes?
It used to be fairly common for people to call a getter, do some calculation on it, then call a setter with the result. This is a clear sign your calculation actually belongs to the class you called ...
- 4,519
