All Oop Solutions on Gang of Coders

Total of 574 Oop Solutions

How do I remove a property from a JavaScript object?

Javascript Object Oop Properties

What are metaclasses in Python?

Python Oop Metaclass Python Class Python Datamodel

Difference between @staticmethod and @classmethod

Python Oop Methods Python Decorators

Understanding Python super() with init() methods

Python Class Oop Inheritance Super

Static class variables and methods in Python

Python Class Oop Static Class Variables

What is Inversion of Control?

Oop Design Patterns Inversion of-Control

When should I use 'self' over '$this'?

Php Class Oop Scope

What's the difference between a method and a function?

Oop Language Agnostic Terminology

What is the difference between an interface and abstract class?

Oop Interface Abstract Class

Prefer composition over inheritance?

Language Agnostic Oop Inheritance Composition Aggregation

Meaning of @classmethod and @staticmethod for beginner?

Python Oop Static Methods Class Method

Why use getters and setters/accessors?

Java Oop Setter Getter Abstraction

What is the difference between an abstract method and a virtual method?

Oop Language Agnostic Abstract Virtual Functions

What is the meaning of single and double underscore before an object name?

Python Oop Naming Conventions Identifier

Why not inherit from List<T>?

C#.Net List Oop Inheritance

Why do Python classes inherit object?

Python Class Oop Object Inheritance

Interface vs Abstract Class (general OO)

Oop Interface Abstract Class

What are the differences between type() and isinstance()?

Python Oop Inheritance Types

Naming Classes - How to avoid calling everything a "<WhatEver>Manager"?

Design Patterns Oop Naming Conventions Naming

What is the difference between a field and a property?

C#Oop Properties Field

What is the purpose of the word 'self'?

Python Class Oop Self

What is a mixin and why is it useful?

Python Oop Multiple Inheritance Mixins

When should you use a class vs a struct in C++?

C++Oop Class Struct Ooad

What is an example of the Liskov Substitution Principle?

Oop Definition Solid Principles Design Principles Liskov Substitution-Principle

Does functional programming replace GoF design patterns?

Oop Design Patterns Functional Programming

What is the difference between public, private, and protected?

Php Oop Private Public Protected

What is the difference between old style and new style classes in Python?

Python Class Oop Types New Style-Class

Usage of slots?

Python Oop Python Internals Slots

How to get a JavaScript object's class?

What do init and self do in Python?

Python Oop Self

What does it mean to "program to an interface"?

Language Agnostic Oop Interface

Monad in plain English? (For the OOP programmer with no FP background)

Oop Functional Programming Monads

Functional programming vs Object Oriented programming

Oop Functional Programming Paradigms

Interface vs Base class

Oop Interface Language Agnostic Base Class Static Typing

Adding a method to an existing object instance

Python Oop Methods Monkeypatching

How do I call a parent class's method from a child class in Python?

Python Class Oop Object Inheritance

How to call a parent class function from derived class function?

C++Oop Inheritance

What is the difference between init and call?

Python Class Oop Object Callable Object

What does 'super' do in Python? - difference between super().init() and explicit superclass init()

Python Oop Inheritance Multiple Inheritance Super

What techniques can be used to define a class in JavaScript, and what are their trade-offs?

Javascript Oop Class

Examples of GoF Design Patterns in Java's core libraries

Oop Design Patterns Java

What is polymorphism, what is it for, and how is it used?

Oop Polymorphism Computer Science

Can we instantiate an abstract class?

Java Oop Class Object Abstract

Difference Between Cohesion and Coupling

Oop Architecture Theory Software Design Ooad

How should a model be structured in MVC?

Php Oop Model View-Controller Architecture Model

How would one write object-oriented code in C?

JavaScript private methods

Javascript Oop Private Methods

JavaScript: Class.method vs. Class.prototype.method

Javascript Oop Prototype Programming

How should I have explained the difference between an Interface and an Abstract class?

Java Oop Inheritance Interface Abstract Class

What is the difference between association, aggregation and composition?

Oop Uml Associations Aggregation Composition

When to use an interface instead of an abstract class and vice versa?

Oop Inheritance Interface Abstract Class

Explaining Python's 'enter' and 'exit'

Python Oop With Statement Contextmanager

Use of .apply() with 'new' operator. Is this possible?

Javascript Oop Class Inheritance Constructor

What are the differences between struct and class in C++?

C++Oop Class Struct C++ Faq

Why Doesn't C# Allow Static Methods to Implement an Interface?

C#Oop Language Features

Should we @Override an interface's method implementation?

Java Oop Interface Annotations

What does the 'static' keyword do in a class?

Java Static Oop Language Features Restriction

What is the difference between class and instance methods?

Objective C Oop Methods Class Method Instance Methods

Constructors in JavaScript objects

Does JavaScript have the interface type (such as Java's 'interface')?

What's wrong with overridable method calls in constructors?

Java Oop Inheritance Constructor Overriding

Is there a performance difference between i++ and ++i in C++?

C++Performance Oop Post Increment Pre Increment

Difference between abstraction and encapsulation?

Oop Encapsulation Abstraction

When should you use 'friend' in C++?

C++Oop Encapsulation Friend

Polymorphism vs Overriding vs Overloading

Java Oop Polymorphism Overloading Overriding

How do I copy items from list to list without foreach?

C#Oop List Foreach Copy

Interface or an Abstract Class: which one to use?

Php Oop Interface Abstract Class

Use of alloc init instead of new

Objective C Oop

What is the difference between loose coupling and tight coupling in the object oriented paradigm?

Oop Object Coupling

When should I use a struct instead of a class?

When should I use "this" in a class?

What is the difference between private and protected members of C++ classes?

C++Class Oop Private Protected

Advantages of using prototype, vs defining methods straight in the constructor?

Javascript Oop Prototype

Why is it necessary to set the prototype constructor?

Javascript Oop Inheritance

Why are unnamed namespaces used and what are their benefits?

C++Oop Namespaces

Explanation of the UML arrows

How do I implement interfaces in python?

How do you create a static class in C++?

C++Oop Class Syntax Static

How can I create a copy of an object in Python?

Python Oop Object Copy

How to compare objects by multiple fields

Chain-calling parent initialisers in python

Python Oop Inheritance Constructor

When should I be using classes in Python?

Abstract class in Java

Java Oop Interface Abstract Class

Benefits of prototypal inheritance over classical?

Javascript Oop Inheritance Language Design Prototype Programming

What does it mean to hydrate an object?

Calling parent class init with multiple inheritance, what's the right way?

Python Oop Inheritance Multiple Inheritance Super

Python function overloading

Python Class Oop Overloading Multiple Dispatch

Do subclasses inherit private fields?

Java Oop Inheritance Private

difference between variables inside and outside of init()

Python Class Oop Constructor

What is the difference between aggregation, composition and dependency?

Class vs. static method in JavaScript

Is it bad practice to make a setter return "this"?

Java Oop Design Patterns

How to get the parents of a Python class?

What does it mean that Javascript is a prototype based language?

Javascript Oop Inheritance Prototype Programming

Constructors in Go

Oop Constructor Go

How do I get a PHP class constructor to call its parent's parent's constructor?

Php Class Oop Inheritance Constructor

Understanding the difference between getattr and getattribute

Python Oop Encapsulation Getattr Getattribute

Object Oriented Javascript best practices?

Why should I prefer to use member initialization lists?

C++Oop Object Construction

OOP vs Functional Programming vs Procedural

Oop Functional Programming Paradigms Procedural Programming

Using property() on classmethods

What is the best method to merge two PHP objects?

What is the point of interfaces in PHP?

Php Oop Interface Theory

How do you design object oriented projects?

Architecture Oop Class Design

Difference between Inheritance and Composition

Java Oop Inheritance Composition

Print all properties of a Python Class

Are getters and setters poor design? Contradictory advice seen

Java Oop Setter Getter Accessor

How to mark a class as Deprecated?

C#.Net Oop Deprecated

Why does Python code use len() function instead of a length method?

Python Function Oop Methods String Length

prototype based vs. class based inheritance

Javascript Oop Inheritance Prototype Programming

How do I declare class-level properties in Objective-C?

Objective C Cocoa Oop

String, StringBuffer, and StringBuilder

Java String Oop Stringbuilder

Getter and Setter?

Php Oop Coding Style

Aspect Oriented Programming vs. Object-Oriented Programming

Oop Aop Paradigms

C++ equivalent of java's instanceof

Java C++Oop Instanceof

Why is the C++ STL is so heavily based on templates? (and not on interfaces)

C++Oop Templates Stl

Thou shalt not inherit from std::vector

C++Oop Inheritance Stl Vector

Why does C# not provide the C++ style 'friend' keyword?

C#C++Design Patterns Oop Friend

Why do you need explicitly have the "self" argument in a Python method?

Python Oop Methods Self

DDD - the rule that Entities can't access Repositories directly

Oop Domain Driven-Design Repository Pattern S#arp Architecture

Iterate over object attributes in python

Python Oop Attributes Iteration

Clone Object without reference javascript

Javascript Oop Object

Difference between Repository and Service Layer?

asp.net Mvc Oop Repository Pattern Service Layer

Difference between virtual and abstract methods

C#Oop Virtual Functions Abstract Function

Separating class code into a header and cpp file

What does 'low in coupling and high in cohesion' mean

How can I access "static" class variables within methods in Python?

Python Oop Static Variables

How to call a parent method from child class in javascript?

Javascript Oop Methods Parent

Creating the Singleton design pattern in PHP5

Php Oop Design Patterns Singleton

What is Serialization?

Java Oop Serialization Marshalling

Using the "final" modifier whenever applicable in Java

How will I know when to create an interface?

Design Patterns Oop Interface Class Design

What is the dependency inversion principle and why is it important?

Oop Solid Principles Glossary Principles Dependency Inversion

Constructors vs Factory Methods

Struct like objects in Java

Java Oop Struct

What is the main difference between Inheritance and Polymorphism?

Java Oop Inheritance Polymorphism

Mutable vs immutable objects

Oop Immutability Mutable

Missing return statement in a non-void method compiles

What is difference between functional and imperative programming languages?

Oop Functional Programming

What is "loose coupling?" Please provide examples

Oop Language Agnostic Loose Coupling

Does ECMAScript 6 have a convention for abstract classes?

Javascript Oop Abstract Class Ecmascript 6

PHP method chaining or fluent interface?

Php Oop Method Chaining Fluent Interface

Class with single method -- best approach?

C#Java Oop Static Methods

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

Java Oop Inheritance Interface Language Design

Why should I avoid multiple inheritance in C++?

C++Oop Multiple Inheritance

Constructor function vs Factory functions

Differences between Proxy and Decorator Pattern

Oop Design Patterns Decorator Proxy Pattern

Checking if an instance's class implements an interface?

Php Interface Oop

Is the PIMPL idiom really used in practice?

C++Oop Pimpl Idiom

When to use static vs instantiated classes

What does "program to interfaces, not implementations" mean?

Oop Design Patterns Interface Software Design Ooad

Object-orientation in C

Method chaining - why is it a good practice, or not?

Oop Fluent Interface Method Chaining

Can I extend a class using more than 1 class in PHP?

Php Class Oop Extends

Understanding prototypal inheritance in JavaScript

Javascript Oop Inheritance Constructor Prototype Programming

List all base classes in a hierarchy of given class?

Python Class Inheritance Oop Introspection

How to declare Return Types for Functions in TypeScript

Javascript Typescript Oop

Java Multiple Inheritance

Java Oop Multiple Inheritance Diamond Problem Multiple Interface-Implem

When to use nested classes and classes nested in modules?

How do I prevent the modification of a private field in a class?

Java Arrays Oop Class

Get PHP class property by string

Php String Oop Properties

What is the difference between self::$bar and static::$bar in PHP?

Php Oop Php 5.3

How do you implement a class in C?

C Class Oop Embedded

What is Delegate?

Singleton with Arguments in Java

Java Oop Singleton Anti Patterns

Declaring javascript object method in constructor function vs. in prototype

Is there more to an interface than having the correct methods

Java Oop Language Features Interface

How do you effectively model inheritance in a database?

.Net Sql Server Oop Inheritance Database Design

Why doesn't Java Map extend Collection?

Java Oop Collections

How do I initialize the base (super) class?

Private vs Protected - Visibility Good-Practice Concern

Oop Language Agnostic Coding Style

Why are private fields private to the type, not the instance?

C#Oop Language Design Language Features Private Members

JavaScript pattern for multiple constructors

Javascript Design Patterns Oop

Static and Sealed class differences

C#.Net Oop Static Sealed

Inheritance vs. Aggregation

Oop Inheritance Language Agnostic Aggregation

Override ActiveRecord attribute methods

Ruby on-Rails Oop Activerecord

Java `final` method: what does it promise?

Method Overloading for null argument

Java Oop Null Overloading

When to use 'raise NotImplementedError'?

Is MATLAB OOP slow or am I doing something wrong?

Matlab Oop Profiling Benchmarking Matlab Class

Real world example about how to use property feature in python?

Python Oop Properties Python Decorators

Creating anonymous objects in php

What is the point of a private pure virtual function?

C++Oop Inheritance Non Virtual-Interface

How do I design a class in Python?

Python Oop Class Design

Default constructor vs. inline field initialization

Java Oop Constructor

Is it possible to create static classes in PHP (like in C#)?

Php Design Patterns Oop Static

What is the del method and how do I call it?

What is an abstract class in PHP?

Php Oop Abstract Class

Encapsulation vs Abstraction?

Difference between a Factory, Provider and a Service?

Oop Design Patterns Repository Pattern

How to check if an object implements an interface?

Java Oop Interface

Why should the "PIMPL" idiom be used?

C++Oop Information Hiding Pimpl Idiom

PHP abstract properties

Php Oop Abstract Class

In PHP, can you instantiate an object and call a method on the same line?

Should init() call the parent class's init()?

Python Oop Superclass

Is there a use-case for singletons with database access in PHP?

Php Oop Design Patterns Singleton

Modelling an elevator using Object-Oriented Analysis and Design

Oop Design Patterns Language Agnostic

What does it mean to start a PHP function with an ampersand?

What is the definition of "interface" in object oriented programming

Oop Interface Definition

Is returning null bad design?

Oop Null Return Value

What is the difference between dynamic and static polymorphism in Java?

Java Oop Polymorphism Overloading Overriding

What is the use of making constructor private in a class?

What does "S3 methods" mean in R?

R Oop R Faq R S3 R S4

Must Dependency Injection come at the expense of Encapsulation?

Oop Dependency Injection Inversion of-Control Encapsulation

Why we should not use protected static in java

Java Oop Inheritance Static Protected

Java: Static Class?

Java Class Oop Static Utility

Why java.lang.Object is not abstract?

Java Oop Abstract Class

Difference between Encapsulation and Abstraction

Oop Encapsulation Abstraction

Default visibility of class methods in PHP

Php Oop Visibility

Nested or Inner Class in PHP

Php Class Oop Nested Inner Classes

How do I create an abstract base class in JavaScript?

Javascript Oop Abstract

When should I use C++ private inheritance?

What is the exact problem with multiple inheritance?

Oop Multiple Inheritance Language Theory

Managing relationships in Laravel, adhering to the repository pattern

Oop Laravel Laravel 4 Repository Pattern Eloquent

What's the point of OOP?

Language Agnostic Oop

Is there a benefit to defining a class inside another class in Python?

Overloaded method selection based on the parameter's real type

Mixin vs inheritance

Oop Inheritance Mixins

JavaScript OOP in NodeJS: how?

Javascript node.js Oop Inheritance Mongoose

Why does PHP 5.2+ disallow abstract static class methods?

Php Oop Static Abstract

Best practice: ordering of public/protected/private within the class definition?

Oop Coding Style Class Design

Should I use a class or dictionary?

Python Oop Class Dictionary

Plotting with seaborn using the matplotlib object-oriented interface

Python Oop Matplotlib Seaborn

Abstract attributes in Python

Python Oop Scala Abstract Class

What is the difference between an interface and a class, and why I should use an interface when I can implement the methods directly in the class?

C#Class Oop Interface Abstraction

Amazon Interview Question: Design an OO parking lot

What does the variable $this mean in PHP?

Php Class Oop This

Is there an alternative to bastard injection? (AKA poor man's injection via default constructor)

C#.Net Oop Dependency Injection Constructor

How to use class methods as callbacks

Php Oop Callback

Why is the clone() method protected in java.lang.Object?

What is the rationale behind having companion objects in Scala?

Oop Scala Companion Object

What is a covariant return type?

Java Oop Covariance

Is it possible to get the non-enumerable inherited property names of an object?

Javascript Oop Object Properties

Why not abstract fields?

Java Oop Methods Field Abstract

What is the advantage of using static methods?

Python Oop Static Methods

Why can't I overload constructors in PHP?

Php Oop Overloading Constructor

Typescript: How to extend two classes?

Javascript Oop Typescript Extends

How can I call the 'base implementation' of an overridden virtual method?

In a PHP project, what patterns exist to store, access and organize helper objects?

Design Patterns Oop Php

When and why would you seal a class?

C#.Net Oop C++ Cli

What is the purpose of Serialization in Java?

Java Oop Object Serialization Stream

What is the difference between an Instance and an Object?

Oop Object Instance

Overriding class constants vs properties

Php Oop Inheritance Overriding Constants

C# : assign data to properties via constructor vs. instantiating

C#Oop Constructor Properties

simple explanation PHP OOP vs Procedural?

Php Oop Procedural Programming Procedural

Inner class within Interface

Java Oop Interface Inner Classes

Where and how is the term used WRAPPER in programming, what does it help to do?

Oop Terminology

Function pointer to member function

C++Oop Function Pointers

Mediator Vs Observer Object-Oriented Design Patterns

Oop Design Patterns Observer Pattern Mediator

Javascript dynamically invoke object method from string

Javascript Oop Dynamic Methods Invoke

Where do I use delegates?

Oop Design Patterns Delegates

What is the purpose of python's inner classes?

Python Class Oop Language Features

What is polymorphism in Javascript?

Javascript Oop Functional Programming Polymorphism Parametric Polymorphism

What are public, private and protected in object oriented programming?

Class Oop Definition Access Modifiers

Sorting objects by property values

Javascript Arrays Sorting Oop Properties

How should I declare default values for instance variables in Python?

Python Class Oop

Why an interface can not implement another interface?

Java Oop Inheritance Interface

Why do we assign a parent reference to the child object in Java?

Java Oop Inheritance Casting Upcasting

Access private field of another object in same class

Java C++.Net Oop

Why there's a separate MutableLiveData subclass of LiveData?

Android Oop Android Architecture-Components Android Livedata

How would you access Object properties from within an object method?

Java Php Oop Theory

Why all the Active Record hate?

Ruby on-Rails Design Patterns Oop Activerecord

How to inherit from a class in javascript?

Creating an empty object in Python

When to implement and extend?

Should you ever use protected member variables?

Object vs Class vs Function

Javascript Class Oop

Multiple Inheritance in PHP

Php Oop Inheritance

Factory pattern in C#: How to ensure an object instance can only be created by a factory class?

C#Design Patterns Oop Factory

downcast and upcast

C#Oop Downcast Upcasting

Dependency Injection & Singleton Design pattern

Design Patterns Oop Dependency Injection

Prevent creating new attributes outside init

Python Python 3.x Class Oop Python Datamodel

base() and this() constructors best practices

C#Oop Inheritance Constructor Instantiation

Can you explain Liskov Substitution Principle with a good C# example?

C#.Net Oop Solid Principles Liskov Substitution-Principle

JavaScript override methods

Javascript Oop Overriding

How to create the perfect OOP application

How can I implement an Access Control List in my Web MVC application?

Php Oop Model View-Controller Acl

Classes vs. Functions

Class Function Oop

Aggregation versus Composition

Should methods that throw RuntimeException indicate it in method signature?

Java Exception Oop Exception Handling

Building big, immutable objects without using constructors having long parameter lists

Java Oop Scala Immutability

How do I access Class member variables in Python?

Python Class Oop Methods Class Variables

How can I get the classname from a static call in an extended PHP class?

Php Oop Inheritance

If Singletons are bad then why is a Service Container good?

Php Oop Design Patterns Frameworks

What is a Pythonic way for Dependency Injection?

Python Oop Authentication Dependency Injection Frameworks

How do functional programming languages work?

Oop Programming Languages Haskell Functional Programming Paradigms

adapter-Any real example of Adapter Pattern

Oop Design Patterns Adapter Software Design

What is the difference between casting and coercing?

Get functions (methods) of a class

Javascript Oop Ecmascript 6

How can I practice better object-oriented programming?

The value of "this" within the handler using addEventListener

Javascript Oop Dom Events

Difference between object and instance

Pass arguments to Constructor in VBA

Vba Class Oop Constructor Factory

Type hinting in PHP 7 - array of objects

Php Arrays Oop Type Hinting Php 7

Preserving a reference to "this" in JavaScript prototype functions

Javascript Oop Scope This Prototype Programming

Alternatives to Object-Oriented Programming?

Oop Programming Languages Paradigms

How to create a new instance from a class object in Python

How to define interfaces in Dart?

Oop Inheritance Dart Interface

ES6 - Call static method within a class

Javascript Oop Ecmascript 6

What exactly is the singleton class in ruby?

Ruby Oop Singleton

Using $this inside a static function fails

Php Oop This Static Methods

When do I have to use interfaces instead of abstract classes?

Java Oop Inheritance Interface Abstract Class

Call an overridden method in base class constructor in typescript

Oop Typescript typescript1.4

Abstraction vs Encapsulation in Java

Java Oop Concept

C++ error 'Undefined reference to Class::Function()'

C++Oop Undefined

Closures in PHP... what, precisely, are they and when would you need to use them?

Php Oop Closures

Polymorphism - Define In Just Two Sentences

Oop Polymorphism Terminology

Object Oriented Design for a Chess game

In Javascript, what does this underscore mean?

Javascript Oop backbone.js

Why PHP Trait can't implement interfaces?

Php Oop Interface Traits

What are Mixins (as a concept)

C++Oop Templates Mixins

Why don't associated types for protocols use generic type syntax in Swift?

Oop Generics Swift Syntax

Is it a bad practice to have multiple classes in the same file?

File Class Oop Language Agnostic

Semicolon after class declaration braces

C++Class Oop Declaration

Calling protocol default implementation from regular method

Swift Oop Protocols Swift2

Learning/Implementing Design Patterns (For Newbies)

Oop Design Patterns

Python - why use "self" in a class?

What is the difference between the override and new keywords in C#?

Good challenges/tasks/exercises for learning or improving object oriented programming (OOP) skills

How much abstraction is too much?

Language Agnostic Oop Abstraction

R: what are Slots?

Oop R S4 Slot R Faq

When should I choose inheritance over an interface when designing C# class libraries?

C#Oop Design Patterns Inheritance Interface

How do you plan an application's architecture before writing any code?

Language Agnostic Architecture Oop

Abstract classes vs. interfaces vs. mixins

Oop Interface Terminology Abstract Class Mixins

What’s the point of inheritance in Python?

Python Oop Inheritance

Should one interface inherit another interface

.Net Oop Inheritance

Private members in CoffeeScript?

Oop Instance Variables Private Members Coffeescript

How to ensure thread safety of utility static method?

Java Oop Thread Safety Static Methods Utility

How do I make JavaScript Object using a variable String to define the class name?

How can I access a private constructor of a class?

Java Oop Constructor Instance

How can I programmatically obtain the max_length of a Django model field?

Python Django Django Models Oop

Is it possible to have an interface that has private / protected methods?

Php Oop Interface

Large Switch statements: Bad OOP?

C#Oop Design Patterns

Why do we use Interface? Is it only for Standardization?

Oop Interface Ooad

Private members in Python

Python Class Oop Member Variables

Examples of practical javascript object oriented design patterns

Javascript Jquery Design Patterns Oop

Class with too many parameters: better design strategy?

Python Oop Neuroscience

The difference between virtual, override, new and sealed override

C#Oop Overriding Virtual New Operator

R and object oriented programming

JavaScript Extending Class

Javascript Oop Object Inheritance Ecmascript 6

What is the difference between dynamic dispatch and late binding in C++?

Auto-implemented getters and setters vs. public fields

C#Oop Properties Field

How should one unit test the hashCode-equals contract?

Java Unit Testing Oop

Passing hashes instead of method parameters

Ruby Oop Coding Style

Do PHP interfaces have properties?

Php Oop Interface Methods

When to use mixins and when to use interfaces in Dart?

Oop Interface Dart Abstract Class Mixins

Are nulls in a relational database okay?

Database Design Oop Null

How can I simulate OO-style polymorphism in C?

C Oop Polymorphism

Is it OK to have a class with just properties for refactoring purposes?

C#Oop Refactoring

Why to use Interfaces, Multiple Inheritance vs Interfaces, Benefits of Interfaces?

Java Oop Inheritance Interface Multiple Inheritance

Simple way to understand Encapsulation and Abstraction

Oop Language Agnostic Encapsulation Abstraction

How abstraction and encapsulation differ?

C#Oop Encapsulation Abstraction

Replacing if else statement with pattern

Java Oop Design Patterns

Why should I use the "using" keyword to access my base class method?

C++Oop Inheritance Using

Are C# properties actually Methods?

Why would I want to use Interfaces?

Will an 'empty' constructor or destructor do the same thing as the generated one?

C++Class Oop Constructor Destructor

Can you get a method name from within a method in PHP?

Php Methods Oop

Is it bad practice for a class to have only static fields and methods?

Oop Class Static

How to call super in PHP?

Does JavaScript have classes?

Javascript Oop Class

How to check if class exists within a namespace?

Php Oop Namespaces

Can you alter a Javascript function after declaring it?

Javascript Function Oop Wrapper Modifier

Variable scopes in Python classes

Python Oop Scope

Fields in interfaces

Java Oop Interface

How do you find a needle in a haystack?

Oop Class Design Program Structure

Coupling and cohesion

Oop Architecture Theory Software Design Ooad

When does it pay off to use S4 methods in R programming

Oop R Methods S4

Are FP and OO orthogonal?

Oop Scala Programming Languages Functional Programming Paradigms

Is it possible to declare a method static and nonstatic in PHP?

Why would I ever use a Chain of Responsibility over a Decorator?

Oop Design Patterns Decorator Chain of-Responsibility

When do I use static variables/functions in php?

Compilation Error: "The modifier 'public' is not valid for this item" while explicitly implementing the interface

If a "Utilities" class is evil, where do I put my generic code?

C#Oop Global Variables Utility Method

What is composition as it relates to object oriented design?

Oop Design Patterns Language Agnostic Composition

Calling a base class' method

PHP class instantiation. To use or not to use the parentheses?

Php Oop Class Instantiation

"public" or "private" attribute in Python ? What is the best way?

Python Oop Properties Encapsulation

Any good examples of inheriting from a concrete class?

Java Oop Inheritance Liskov Substitution-Principle

What is method hiding in Java? Even the JavaDoc explanation is confusing

Java Oop Method Hiding

PHP traits - defining generic constants

PHP : 'use' inside of the class definition

Php Oop Namespaces Multiple Inheritance

Force subclasses of an interface to implement ToString

How can you organize the code for a game to fit the MVC pattern?

Java Oop Design Patterns Model View-Controller

When should I use stdClass and when should I use an array in php oo code?

Php Oop Stdclass

Attaching a decorator to all functions within a class

Python Class Oop Decorator Class Method

Should I recommend sealing classes by default?

C#Java .Net Oop

Why doesn't PHP permit private const?

Php Oop Constants Private Encapsulation

How is almost everything in Javascript an object?

Benefit of Polymorphism

Java Oop Jakarta Ee Polymorphism

DDD - Persistence Model and Domain Model

Oop Model Repository Domain Driven-Design Repository Pattern

Is deriving square from rectangle a violation of Liskov's Substitution Principle?

Oop Liskov Substitution-Principle

Why are circular references considered harmful?

HAS-A, IS-A terminology in object oriented language

Can you pass-by-reference in R?

R Oop Parameter Passing Pass by-Reference

What is the difference between a function, an unbound method and a bound method?

Python Oop Function Methods

is it possible to call overridden method from parent struct in Golang?

Oop Inheritance Go Overriding

Laravel: Difference App::bind and App::singleton

Php Oop Laravel 4 Ioc Container Facade

Spring and the anemic domain model

What is so special about Smalltalk?

Programming Languages Oop Smalltalk

How to force overriding a method in a descendant, without having an abstract base class?

"Closures are poor man's objects and vice versa" - What does this mean?

Functional Programming Object Oop Closures

What exception to throw when an important parameter/dependency is missing?

Java Oop Exception

What is wrong with making a unit test a friend of the class it is testing?

C++Unit Testing Oop Encapsulation Friend

calling setters from a constructor

Accessing parent class in Backbone

Javascript Oop Class Inheritance backbone.js

MVC for advanced PHP developers

Php Oop Model View-Controller

Coupling, Cohesion and the Law of Demeter

Oop Refactoring Coupling Law of-Demeter Cohesion

Why does this polymorphic C# code print what it does?

C#.Net Oop Inheritance Polymorphism

If-less programming (basically without conditionals)

Oop Polymorphism Conditional

How to Check for a Specific Type of Object in PHP

Php Oop Object Type

Difference between OOP interfaces and FP type classes

Oop Haskell Interface Functional Programming Typeclass

In SOLID, what is the distinction between SRP and ISP? (Single Responsibility Principle and Interface Segregation Principle)

Oop Design Patterns Solid Principles Single Responsibility-Principle Interface Segregation-Principle

C# : Converting Base Class to Child Class

How to handle the pylint message: Warning: Method could be a function

Python Oop Pylint

SOLID vs. YAGNI

Oop Yagni Solid Principles

Adding custom properties to a function

Javascript Function Oop Object Custom Properties

Can we cast a generic object to a custom object type in javascript?

Javascript Oop Object

Why can't a derived class call protected member function in this code?

How do you know when to use design patterns?

Design Patterns Oop

When should I use static methods in a class and what are the benefits?

Oop Static Methods Static Variables

Why is it impossible to change constructor function from prototype?

Javascript Oop Prototype

Get parent class name?

Underscores or camelCase in PostgreSQL identifiers, when the programming language uses camelCase?

Oop Postgresql Database Design Naming Conventions Camelcasing

Performance of static methods vs. functions

Php Performance Oop

What is an abstract data type in object oriented programming?

Oop Object Abstract Data-Type

Should Java methods be static by default?

Object oriented javascript with prototypes vs closures

How exactly do static fields work internally?

C#Java Php Oop Static Members

Proper way to implement ICloneable

C#.Net Oop Icloneable

Why can't I declare C# methods virtual and static?

'Shadows' vs. 'Overrides' in VB.NET

.Net vb.net Oop Overriding Shadows

Magic __get getter for static properties in PHP

Php Oop Properties Getter

interface as a method parameter in Java

Java Oop Interface

Why use inheritance at all?

Java Oop Language Agnostic Inheritance Composition

Why doesn't Rust support trait object upcasting?

Oop Rust Language Design Liskov Substitution-Principle

Static and Instance methods with the same name?

Why can't I create an abstract constructor on an abstract C# class?

C#Inheritance Oop Constructor Abstract Class

Avoiding 'instanceof' in Java

Java Oop Instanceof

How can a class have a member of its own type, isn't this infinite recursion?

Is polymorphism possible without inheritance?

Java Oop Inheritance Polymorphism

Understanding IoC Containers and Dependency Injection

Php Oop Inheritance Dependency Injection Inversion of-Control

Object Oriented Programming - how to avoid duplication in processes that differ slightly depending on a variable

Why is Python not fully object-oriented?

Achieving polymorphism in functional programming

Oop Language Agnostic Prototype Functional Programming Polymorphism

What does it mean to set the declaration of a function equal to 0? How can you assign an integer to a function?

C++Windows Oop Winapi Pure Virtual

Using the call method of a metaclass instead of new?

Python Oop Metaclass

Modify Twitter Bootstrap collapse plugin to keep accordions open

Javascript Jquery Oop Twitter Bootstrap

Class views in Django

Python Django Views Oop

Do fluent interfaces violate the Law of Demeter?

Language Agnostic Oop Api Design

Closures: why are they so useful?

Oop Functional Programming Closures

Distinguishing between delegation, composition and aggregation (Java OO Design)

Java Oop Aggregation Composition Delegation

Single Responsibility Principle vs Anemic Domain Model anti-pattern

Oop Solid Principles Single Responsibility-Principle Anemic Domain-Model

When should one use interfaces?

Duck Typing in Javascript

When to use Final in PHP?

What is the real difference between "Bastard Injection" and "Poor Man's Injection"

Oop Dependency Injection Architecture

Why doesn't generic ICollection implement IReadOnlyCollection in .NET 4.5?

C#Oop Design Patterns .Net 4.5 C# 5.0

Problems with circular dependency and OOP in AngularJS

Javascript Oop Angularjs

Julia: OOP or not

Class Oop Struct Julia

Chaining Static Methods in PHP?

Php Oop Method Chaining

Try to describe polymorphism as easy as you can

Language Agnostic Oop Polymorphism

Is DDD a waste of time?

Oop Domain Driven-Design

Calling one prototype method inside another in javascript

Javascript Oop Prototype

How define constructor implementation for an Abstract Class in Python?

Python Python 2.7 Oop Abstract Class

How can I design a Java web application without an ORM and without embedded SQL

Oop Design Patterns Orm

Can I include code into a PHP class?

In what areas does F# make "absolute no sense in using"?

C#Oop F#Functional Programming

Composition, Inheritance, and Aggregation in JavaScript

Javascript Oop Inheritance Composition

Encapsulation vs Data Hiding - Java

Java Oop Encapsulation Software Design Data Hiding

Should all member variables be initialized in init

Python Oop Instance Variables

Java Design Issue: Enforce method call sequence

Java Oop Design Patterns

How do you deal with polymorphism in a database?

Database Design Oop

C++ virtual function from constructor

C++Oop Class Constructor Virtual

What is immutability and why should I worry about it?

Oop Immutability

Why use PHP OOP over basic functions and when?

Why should constructors on abstract classes be protected, not public?

C#.Net Oop Inheritance Access Modifiers

Can you create instance properties dynamically in PHP?

Php Design Patterns Oop Class

Why are Haskell algebraic data types "closed"?

Oop Haskell Types Functional Programming Type Systems

What is the difference between a concrete class and an abstract class?

Practical example of Polymorphism

Python Oop Polymorphism

Call method by string?

Not sure when to use an abstract property and when not

C#.Net Oop Properties Abstract

Should I use nested classes in this case?

C++Oop Class Nested Class

Access parent's parent from javascript object

mocking a singleton class

Java Unit Testing Oop

JavaScript: The Good Parts - How to not use `new` at all

Javascript Oop Constructor New Operator

Empty class object in Python

Python Oop Empty Class

Inheriting methods' docstrings in Python

Python Oop Inheritance Docstring Template Method-Pattern

What are the purposes of inner classes

Java Oop Class Inner Classes

Can't seem to understand SOLID principles and design patterns

Oop Design Patterns Solid Principles

typescript interface initialization

Do constructors always have to be public?

Java Oop Design Patterns Constructor Access Modifiers

What is the difference between inheritance and Categories in Objective-C

Objective C Oop Inheritance Categories

When should I declare variables in a PHP class?

Static Method of a Static Class vs. Static Method of a Non-Static Class ( C# )

C#Oop Static Methods

How to auto register a class when it's defined

Python Oop Design Patterns Decorator Metaclass

Aggregation vs Composition vs Association vs Direct Association

Oop Uml Aggregation Composition Model Associations

Creating Classes in R: S3, S4, R5 (RC), or R6?

How many constructors does the class have?

C++Oop Constructor

Kotlin calling non final function in constructor works

Java Oop Kotlin

What is the best way to create a sparse array in C++?

C++Oop Data Structures Hash Maps

Alternative to the visitor pattern?

Oop Design Patterns Visitor Pattern

How can Inheritance be modelled using C?

C Oop Inheritance

Purpose of PHP constructors

Php Class Oop Constructor

Ruby on rails - Static method

Ruby Oop Static Methods

Does instanceof return true if instance of a parent?

Java Oop Inheritance Polymorphism Instanceof

default parameters in .h and .cpp files

C++Oop Header Files

Whats the difference between objects and data structures?

Java Oop Object Data Structures Language Agnostic

What is the meaning and reasoning behind the Open/Closed Principle?

Oop Definition Solid Principles Design Principles Open Closed-Principle

Is JavaScript object-oriented?

Why can't I seem to grasp interfaces?

Getting static property from a class with dynamic class name in PHP

Php Oop Dynamic Static Properties

Object oriented programming in C

setTimeout() inside JavaScript Class using "this"

Javascript Oop Closures

Python - Testing an abstract base class

Python Oop Testing Abc

What does classname.class return?

When should objects be used in OCaml?

Oop Object Ocaml

angularjs with oop inheritance in action

Difference between methods and functions, in Python compared to C++

Python Function Oop Methods

What's the difference between abstraction and encapsulation?

Oop Encapsulation Abstraction

How to call non-static method from static method of same class?

How do I call a static method of another class

C++Windows Oop Mfc Static Methods

What exactly is an instance in Java?

Java Oop Object Reference Instance

Why do I get an error instantiating an interface?

C#Oop Class Interface Instantiation

What are some best practices for OpenGL coding (esp. w.r.t. object orientation)?

When to use delegation instead of inheritance?

Oop Inheritance Delegation

How can I require a method argument in Java to implement multiple interfaces?

Java Oop Multiple Inheritance

Can an object automatically delete itself in javascript once it has achieved its purpose?

What's the difference between entity and class?

Oop Class Entity Elgg

init and arguments in Python

Python Class Oop Instance

What are classes, references, and objects?

Java Oop Class Object Reference

Is self.dict.update(**kwargs) good or poor style?

Python Oop Dictionary

Abstract Method in Non Abstract Class

C#Oop Compiler Construction

Factory classes

Java Oop Object Factory

Passing whole object vs passing object's property

Java Performance Oop

Pass by reference or pass by value?

Language Agnostic Oop Parameters Pass by-Reference Pass by-Value

Why are we not allowed to specify a constructor in an interface?

C#.Net vb.net Oop

How to force sub classes to implement a method

C#Oop Inheritance

Do write-only properties have practical applications?

Oop Properties Language Agnostic

Abstract class with final uninitialized field

Why "private" methods in the object oriented?

Oop Encapsulation

Why can't you call abstract functions from abstract classes in PHP?

Php Oop Static Methods Abstract

$stmt->execute() : How to know if db insert was successful?

What is the difference between a fluent interface and the Builder pattern?

Java Oop Design Patterns

What's the size cost of Java inheritance?

Java Oop Inheritance Jvm Internal Representation

Default implementation of a method for C# interfaces?

C#Oop Interface

Initialize multiple constant class members using one function call C++

C++Oop Constructor Constants Initializer List

How do you get a reference to the enclosing class from an anonymous inner class in Java?

How much work should be done in a constructor?

Oop Constructor

Should an object write itself out to a file, or should another object act on it to perform I/O?

C#Design Patterns Oop Io

Allen Holub wrote "You should never use get/set functions", is he correct?

Language Agnostic Oop Immutability Setter Getter

PHP: Real world OOP example

What are good JavaScript OOP resources?

Javascript Oop Closures

Why declare an interface as abstract?

Java Oop Interface

When should methods be made private?

When to make a method static?

Language Agnostic Oop Static Methods

Why aren't static methods considered good OO practice?

Java Scala Oop Static Methods Language Concepts

Returning a value in constructor function of a class

Php Oop Class Constructor

Accessing Class Properties with Spaces

Php Oop Class Codeigniter Properties

parent::parent in PHP

Can a simple difference in Python3 variable names alter the way code runs?

Python Oop Python 3.x Finalizer

Why private method can not be final as well?

Java Oop Methods Final

When should I use static methods?

PHP: cannot declare class because the name is already in use

C++ inheritance and member function pointers

C++Inheritance Oop Member Function-Pointers

Is the C programming language object-oriented?

C Oop Standards

Calling a super method in PHP

What's the Python version for “Code against an interface, not an object”?

Python Oop Interface Inversion of-Control

How to dynamically set a function/object name in Javascript as it is displayed in Chrome

Javascript Oop Google Chrome Joose

How do I inherit javascript functions ?

Javascript Oop Function Inheritance Prototypal Inheritance

C# Interface Inheritance to Abstract class

C#Oop Interface Abstract Class Concrete

What's the difference between an abstract class and an interface?

C#Oop Interface Abstract Class

C# inheritance and default constructors

C#Oop Constructor