All Questions
Tagged with programming-practicesobject-oriented-design
38 questions
-1votes
1answer
167views
Help in understanding if my design getting complicated [closed]
I have 3 classes class Backup end class Database end Class App end The backup database has a reference to Database and App, like class Backup def getDatabase Database.create end def ...
- 109
2votes
3answers
235views
Correctness of an implementation beyond the methods signature contract of an interface
Is there a programming principle/guideline that tackles the correctness of a implementation beyond the methods signature contract of an interface? Let's say we have a repository interface with two ...
- 53
-1votes
1answer
107views
How can I prevent an object from being re-sanitized everytime it is passed as input to a function?
Suppose that I have a class named CharStream Additionally, there are a large number of functions which convert their function input into a CharStream def funky_the_function(_input): input = ...
3votes
4answers
780views
Is it a bad practice to have an interface method to tell whether it can handle an object?
interface Resolver { boolean canResolve(SomeInput input); SomeOutput resolve(SomeInput input); } public static void main(String[] args) { List<Resolver> resolvers = ...; ...
4votes
3answers
1kviews
Passing object or using the field
I would like to know what is a more appropriate way to code in Java. Is it generally better to pass entire objects in the method's parameters or just using the fields from the class? Using the field: ...
- 163
-1votes
1answer
241views
How to avoid cyclic dependency in UI application
I'm developing an UI application where I ran into an issue with a cyclic dependency. Here is the simplified code, to explain the problem. #include <list> class UiStyle; UiStyle* CreateStyle(); ...
- 33
-1votes
3answers
226views
Difference between update a property and fire an event
It seems to me that update a property is always an 'event' and that all you can do with an event handler can be done in the property let/set routine. And, in my limited experience, I never needed to ...
- 209
0votes
1answer
564views
Using for_each instead of iterators to avoid iterator invalidation
I am writing a simple custom (special purpose) container and would like to allow for iteration over each element, however, avoid using iterators due to the problem of iterator invalidation. Instead of ...
- 103
0votes
2answers
2kviews
Should I use a class with only static members to encapsulate my program?
So I'm writing a network simulator in C++ as part of a university project. Right now, I have a class structure that looks something like: //includes type aliases #include "GlobalTypes.h" //main body ...
2votes
1answer
118views
Is it a good software engineering practice to store libraries as attributes of objects?
Suppose I initialize a library, say, in python object - #filename: file_A import file_ class A(): def __init__(self): self.pd = file_.pd self.np = file_.np And suppose the ...
- 131
2votes
2answers
4kviews
Module with globals or Class with attributes?
Currently I'm working with a lot of modules where the original developers used global variables to control states and to exchange important information between functions, like so: STATE_VAR = 0 def ...
- 131
1vote
1answer
618views
Should the function that operates on the object return it?
Should the function that operates on the object return it? Shortened example: class Example1 { public function method($a, $b) { $result = new Result($a, $b); $this->...
- 19
2votes
5answers
1kviews
What should a constructor contain?
What should a constructor contain? In both cases, all three arguments are needed for the class to work. Which approach is better and why? 1) class Language { LanguageRepository ...
- 31
-6votes
1answer
189views
Finding object relationships [closed]
Description Its a follow up question of writing use cases. Taking from nouns defined in my user story and requirement I found the following candidates to be classes: User Question Session Attempt/...
- 2,186
4votes
4answers
539views
Is it better to generate a large list during the constructor or when it's accessed?
I've got a class member function that generates a large list and puts it into a private member variable so it can be accessed through a getter. The generation of this list is a rather intensive ...
