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Questions tagged [encapsulation]

Encapsulation is the principle of bundling software elements in a way to hide implementation details and to expose only a known interface.

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How might encapsulated source be broken into into multiple files?

I have a project where there is a primary, high-level, opaque struct with many functions that operate on it. Maybe I am simulating a CPU. How might the corresponding source code be organized? One way ...
Ana Nimbus's user avatar
2 votes
2 answers
220 views

Handling parents events from child component, in a props down events up approach

This question is language/framework agnostic. EDIT: The comments and answers have highlighted how different languages approach events differently, which made me realize this question isn't really ...
Michael Haddad's user avatar
1 vote
6 answers
388 views

How encapsulating what varies can help us?

I have a question about encapsulation and I read these two topic (this & this) but I got more confused. I've been reading Head First Object-Oriented Analysis and Design book and I'm trying to ...
Mehdi's user avatar
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1 vote
2 answers
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MVVM: How and should I expose view models' models to other view models?

Many times while writing MVVM apps in C# I've come across this sort of problem where I need to expose the model in a view model so that I can get it in another view model and do something with it. ...
aelsi2's user avatar
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9 votes
4 answers
3k views

Is it okay to have misleading struct and function names for the sake of encapsulation?

I'm writing this library in which the user can provide custom code defining the algorithm used for finding an optimal solution. In the papers that I have read, the targeted user thinks in terms of ...
Mehdi Charife's user avatar
1 vote
2 answers
221 views

Where to determine different behaviour for a child class with feature flags

Let's say that I have a Parent class and a Child class, Parent relies on Child to perform, say, some network request: class Parent { ... public init(){ const child = new Child(); const ...
Tizio Fittizio's user avatar
0 votes
2 answers
315 views

How is my class breaking encapsulation?

I was submitting this code in Java to an AI tool that checks for OOPS modeling and it says that this class is breaking encapsulation, although it did not gave any reason why. The objective is to store ...
Ayush Kumar's user avatar
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0 answers
81 views

Lambdas vs scope blocks for encapsulation in c++

When working with functions that run a few short "procedures" in sequence that are not used anywhere else and it makes sense to keep it all inline, in a single function, a large part of the ...
Jake1234's user avatar
  • 129
3 votes
4 answers
639 views

If encapsulation and abstraction is so important, why do we care about how things work "under the hood"

As I am learning OOP principles, I know that it is always good practice to hide the inner workings of classes so that the end user can't access or break them. I understand why this is important. The ...
Caleb Shank's user avatar
1 vote
2 answers
4k views

Recommended way of hiding implementation details?

I have a single *.h file. This file contains a single (more to come) function declaration. Now the implementation of that file is very complex. the corresponding *.cpp contains several function ...
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3 votes
5 answers
323 views

Add specific behavior inside classes

I'm learning to make games with OOP and there's something I don't understand. What I can see is that the more I add methods to a class, the less it becomes reusable and flexible. For example, if we ...
Voko's user avatar
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1 answer
184 views

How far can one debug a low-level API in closed-source environments?

Assume a low-level API is provided without source code (e.g. DirectX). The API provides a virtualization of hardware resources (GPU, CPU, audio card, etc.), which enables the user to call hardware-...
chckx592's user avatar
8 votes
4 answers
2k views

Are there any legitimate use cases for protected visibility?

Protected visibility in languages like C++, Java or PHP is a strange beast: it makes fields and methods accessible in subclasses, but not in code completely outside the class. It strikes me as ...
user3840170's user avatar
2 votes
3 answers
786 views

How do you achieve encapsulation while "separating view and business logic"?

I've been trying to get a better understanding of OOP (I'm not the biggest fan of it, but I still want to understand it). One of the core principles of OOP is encapsulation - you're supposed to ...
Scotty Jamison's user avatar
0 votes
1 answer
261 views

Is this dependency propogation an anti-pattern, and how do I remove it?

Module A contains a gap buffer for manipulating text and some associated methods. Relevant to this question is the dependency on a Module B, used for syntax highlighting of text. Module A also ...
user avatar
1 vote
1 answer
171 views

How to test functionality that requires a certain internal state?

I'm struggling to test functionality in a class where the class has to be in a certain state for the functionality to work, but the class cannot be put directly into a given state by design, to ...
gotube's user avatar
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0 votes
2 answers
85 views

Restructuring a “processing slip” like object used in many steps

I have worked on a library which processed data through multiple steps. It was written in R, a dynamic programming language where one could just add fields to existing “objects”, which were just ...
Martin Ueding's user avatar
2 votes
1 answer
112 views

Guidelines for using extensions in Swift

The other day, I came across this question on StackOverflow. In short, the user who asked the question wanted to extend a class from a third-party library to implement the Codable protocol, but ...
TallChuck's user avatar
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-3 votes
2 answers
116 views

What design pattern / class / interface should I use for encapsulating a program? [closed]

I am building a chess - related application, and I want to use a pre-compiled program called Stockfish as my chess engine. I am wondering what is the best practice to encapsulate the usage of the ...
Aviv Aviv's user avatar
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0 votes
2 answers
146 views

Where to put files (interfaces) that link two independent assemblies: Authentication and Main Program

I'm having an issue with dependencies in a C# app that I'm creating. I have an assembly for my authentication process, and a separate assembly for starting up the main program once authentication is ...
Adam B's user avatar
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0 votes
3 answers
292 views

Does encapsulation in OOP happen at run time or compile time?

Encapsulation is the hiding of an implementation in OOP the way I understand it. I searched on Google and I was thinking of trying to write a program to test, but my tests would only happen at run ...
NewYorkSup's user avatar
4 votes
4 answers
1k views

How name public method that relays to abstract methods of its children (c#)

I've run into the following situation multiple times, and in every case have struggled with the naming. I want a class to force its children to implement a method, but I want the parent class to be ...
Adam B's user avatar
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2 votes
1 answer
4k views

How to separate public and private headers when internal data structures are private?

When developing a shared library in C, it is common to separate the "public" headers from the "private" headers. The public headers contain all the functions and types that are ...
Woodrow Barlow's user avatar
1 vote
2 answers
174 views

How does one choose where to place logic which converts data between two formats/representations?

Suppose I have two "modules", A, and B (I'm choosing not to use classes, because you generally can't create an instance of a module, which makes this question simpler). These modules contain ...
taylorthurlow's user avatar
0 votes
1 answer
96 views

Could a getState() method in a Caretaker violates Memento Pattern?

I have looked at several examples for implementations of Momento on the web. I wonder if it is correct to retrieve the status of Originator, since this is much more accurate, up-to-date and reliable? ...
celsowm's user avatar
  • 253
2 votes
2 answers
674 views

Are multiple dynamic dispatch methods possible?

C++ only supports single dynamic dispatch methods. Indeed, the following program: #include <iostream> struct Shape { virtual void overlap(Shape* y) { std::cout << "Shape, Shape\n&...
Géry Ogam's user avatar
3 votes
3 answers
1k views

Encapsulation violation

I was going through a question and here the answer says that Encapsulation is being violated class car { int speed; public : int* getSpeed() { return &speed; } }; int ...
arqam's user avatar
  • 149
0 votes
0 answers
41 views

Use debug-functionality without breaking architecture

note: This is of couse about software-architecture/design-principles, but as no architecture is completely detached from its language, please note that the language i am using is C++. I am using an ...
LeonTheProfessional's user avatar
1 vote
1 answer
284 views

Modular programming with C: Separate device logic from communication protocol logic

I have no experience with C (only C++ and higher level languages). Right now I have tried and failed to find general guidelines on how to write good C code in a way that allows to separate the ...
Adomas Baliuka's user avatar
0 votes
2 answers
2k views

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 ...
Connor Carr's user avatar
0 votes
2 answers
114 views

Pros and cons of different implementations wrt encapsulation

I have an application. It needs to send emails. We've all been there, done that, got the t-shirt. I've got an IEmailMessage interface: public interface IEmailMessage { string From { get; } ...
Ian Kemp's user avatar
  • 399
2 votes
1 answer
382 views

State Machine: what object is responsible for state transfer?

I would like to create a state machine. Each State would have its run method, and, according to some logic would then set a next state. Option 1: If each state is responsible for determining a next ...
Gulzar's user avatar
  • 1,240
0 votes
4 answers
533 views

Open closed principle: code duplication and encapsulation

In another question on this site, asking to clarify the open closed principle, @Kate Gregory answered this. I'm interested in this part specifically: Imagine you wrote an Invoice class that works ...
Unimportant's user avatar
2 votes
5 answers
757 views

Splitting class responsibilities without exposing private data

I'm struggling to find good ways to split up classes without exposing private data. Most articles I read about SRP seem to ignore how the new classes that take on the separated responsibilities access ...
Unimportant's user avatar
37 votes
7 answers
9k views

Do you need to think about encapsulation if you can ensure immutability?

Encapsulation In object-oriented programming (OOP), encapsulation refers to the bundling of data with the methods that operate on that data, or the restricting of direct access to some of an ...
Christopher Trotter's user avatar
13 votes
3 answers
6k views

How does encapsulation actually work?

I made the following diagram to show a typical separation of concerns as typically taught - Here ClassA indirectly uses ClassB via the ISomeInterface, of course ensuring it doesn't know ClassB exists,...
user4779's user avatar
  • 929
2 votes
4 answers
2k views

Separating data and behavior in Java

I am in the process of refining my code to adhere more to my current understanding of the Single Responsibility Principle (SRP). Originally, I had a class called Animal that had a set of methods and ...
MagerBlutooth's user avatar
4 votes
2 answers
2k views

Is there anything wrong with writing getter/setter methods in C#? [duplicate]

I am a Java dev for almost all of my programming (at least in the workplace) but I do some Unity for fun on the side. I have used C# properties many times and they are convenient to still provide ...
JaredSK74's user avatar
3 votes
2 answers
1k views

Clean Code: Avoiding "Order Matters" without passing member variables to private methods?

I am trying to implement some of the principles laid out in Clean Code by Robert C. Martin. I had a class that was heavily suffering from the ordering problem. I have solved most of this by ...
MSOACC's user avatar
  • 945
9 votes
4 answers
1k views

Can renaming a method preserve encapsulation?

I was reading this page, about when getters/setters are justified, and the OP gave the following code sample: class Fridge { int cheese; void set_cheese(int _cheese) { cheese = _cheese; } ...
QueenSvetlana's user avatar
-2 votes
2 answers
456 views

C# Static & Constructor Logic [closed]

I learn C# and try to understand the logic between static and Constructor right now. One thing I need ask you about an example which I will give at below. (please ignore the quality of code or how ...
Melih Cinar's user avatar
0 votes
1 answer
95 views

Sharing #define's between higher and lower layer. Where should shared types go? [closed]

Let's say I have a stacked 2 layer app (High Layer (HL) and Low Layer (LL)) that is implemented in C. HL defines a few #defines. HL calls a LL function with a parameter that takes values of the #...
Satrapes's user avatar
2 votes
4 answers
240 views

Can encapsulation/information hiding cause problems in error identifying/locating?

I understand the principles behind opaque data types, encapsulation, information hiding, etc. in theory: preventing alteration to parts of a program can prevent people from accidentally messing it up, ...
Nicholas's user avatar
  • 163
0 votes
4 answers
372 views

methods that has only behavior and not manage class state, is that violation of encapsulation

This is a simple scenario in an office with employees and their manager. In this scenario, both managers and employees have a name attribute. Only the manager can change his own name Only the ...
Susantha7's user avatar
  • 396
1 vote
4 answers
372 views

What's the purpose of explicit encapsulation?

Assume you have a library in which every function is public. Sooner or later developers who use your library will come up with a stable pattern of usage. In that terms external information of how ...
Eugene's user avatar
  • 43
3 votes
4 answers
2k views

Should a class provide public mutators for all its private fields?

I work on refactoring an Java application based on a CAST audit. One of the criterion says that To respect OO encapsulation concepts, private fields should always be accessed through accessors ...
The Once-ler's user avatar
3 votes
6 answers
2k views

The ID of an object is null at start. Does that make the object state invalid and violate encapsulation?

This question is related to How should an `Employee` class be designed? In the above question, to uniquely identify an employee, each Employee object has an id field as shown below class Employee { ...
Susantha7's user avatar
  • 396
4 votes
1 answer
225 views

Is using getters to exchange information between objects acceptable?

Suppose I have the following Character, Potion, and PotionType classes: class Player: def __init__(self, name: str, health: int, mana: int): self._name = name self._attributes: ...
user avatar
1 vote
4 answers
796 views

Can method names give any implementation details and break encapsulation?

I was reading here about OOP and methods, and the accepted answer states that method names should be verbs. However, that doesn't really answer my question. Suppose if I had a Character class with a ...
user avatar
-1 votes
3 answers
415 views

restricting access to a public setter

My question is how I can achieve more encapsulation in TypeScript. I have a class Item, with a public setter isOwned, but I only want to call this method in specific situations: if the item is picked ...
chharvey's user avatar
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