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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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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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 ...
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
...
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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&...
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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 ...
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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 ...
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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 ...
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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 ...
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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; }
...
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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 ...
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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 ...
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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 ...
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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 ...
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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,...
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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 ...
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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 ...
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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 ...
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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; }
...
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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 ...
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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 #...
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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, ...
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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 ...
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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 ...
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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
...
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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
{
...
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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: ...
user327264
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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 ...
user327264
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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 ...
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Is it a bad idea have make a class method that is passed class variables?
Here's what I mean:
class MyClass {
int arr1[100];
int arr2[100];
int len = 100;
void add(int* x1, int* x2, int size) {
for (int i = 0; i < size; i++) {
x1[i] +...
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Using friend classes to encapsulate private member functions in C++ - good practice or abuse?
So I noticed it's possible to avoid putting private functions in headers by doing something like this:
// In file pred_list.h:
class PredicateList
{
int somePrivateField;
...
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looking to solidify understanding of OOP principles
I just wanted some feedback on my definitions of these terms.
Abstraction - only showing relevant information and hiding implementation details. Interfaces and abstract classes are an examples of ...
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Wrapping Object VS Copying Fields
Almost every software has a number of internal data structures that we don't want to expose externally (through APIs for example).
Let's say we have a few classes representing 1:1 database tables - ...
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Separation of concerns: When is it "too much" separation?
I really love clean code and I always want to code my code in the best possible way. But there was always one thing, I didn't really understand:
When is it too much of "separation of concerns" ...
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OOP Encapsulation Philosophy
Is it fair to say that it is good practice to default everything to private up when defining a class?
For example, for my public interface I would set my class something like this:
class foo {
...
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C# encapsulate field is a violation of YAGNI
Consider these two ways to declare a field in a C# class
option A
public class AuditController
{
public DataAccess Service;
}
option B
public class AuditController
{
private DataAccess ...
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API DESIGN: Store Table of function pointers in client or dynamically in api service
FIRST AND FOREMOST: Forgive me if the following question falls into the "off topic" category of this StackExchange, due to its slightly opinion polling nature. This is not my intention, I am simply ...
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Ensure encapsulation and Open/Closed principle with Command pattern?
I'm developing a small multiplayer game. It'll be served by one websockets server and consumed by multiple consumers. As such I need to be cautious about concurrency errors.
The general software ...
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