https://github.com/nidhiupman568/object-oriented-programming-oops-
Ace Your Interviews with These Key Object-Oriented Programming (OOP) Concepts
https://github.com/nidhiupman568/object-oriented-programming-oops-
object-oriented-programming oops
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Ace Your Interviews with These Key Object-Oriented Programming (OOP) Concepts
- Host: GitHub
- URL: https://github.com/nidhiupman568/object-oriented-programming-oops-
- Owner: nidhiupman568
- Created: 2023-06-04T23:32:46.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2024-06-12T13:49:12.000Z (12 months ago)
- Last Synced: 2025-01-10T02:36:13.257Z (5 months ago)
- Topics: object-oriented-programming, oops
- Homepage:
- Size: 5.86 KB
- Stars: 4
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Key Points of Object-Oriented Programming (OOP)
### Essential for Interviews
Object-Oriented Programming (OOP) is a crucial concept in software development and frequently discussed in technical interviews. Here are some important points we should master:
## 1. **Encapsulation**
- **Definition:** Bundling the data (attributes) and the methods (functions) that manipulate the data into a single unit called a class.
- **Benefits:** Protects the data from unauthorized access and modification, enhances modularity, and makes the code easier to manage.## 2. **Inheritance**
- **Definition:** Mechanism by which one class (child/subclass) inherits the properties and behaviors (methods) of another class (parent/superclass).
- **Benefits:** Promotes code reusability, reduces redundancy, and establishes a natural hierarchy between classes.## 3. **Polymorphism**
- **Definition:** Ability to present the same interface for different data types. Methods can be overridden (run-time polymorphism) or overloaded (compile-time polymorphism).
- **Benefits:** Enhances flexibility and integration, allows for one interface to be used for a general class of actions.## 4. **Abstraction**
- **Definition:** Hiding the complex implementation details and showing only the essential features of the object.
- **Benefits:** Simplifies the complexity of the system, helps in focusing on what an object does instead of how it does it.## 5. **Classes and Objects**
- **Class:** Blueprint or template from which objects are created. Contains methods and attributes.
- **Object:** Instance of a class. Represents a real-world entity with state and behavior.## 6. **Constructors and Destructors**
- **Constructors:** Special methods called when an object is instantiated. Used for initializing the object's state.
- **Destructors:** Special methods called when an object is destroyed. Used for cleanup activities.## 7. **Access Modifiers**
- **Types:** Public, Private, Protected
- **Purpose:** Controls the visibility and accessibility of class members.## 8. **Method Overriding vs. Overloading**
- **Overriding:** Subclass provides a specific implementation for a method already defined in its superclass.
- **Overloading:** Multiple methods with the same name but different parameters within the same class.## 9. **Design Patterns**
- **Common Patterns:** Singleton, Factory, Observer, Strategy, etc.
- **Importance:** Provides proven solutions to common problems, enhances code readability, and promotes best practices.## 10. **SOLID Principles**
- **Single Responsibility Principle (SRP)**
- **Open/Closed Principle (OCP)**
- **Liskov Substitution Principle (LSP)**
- **Interface Segregation Principle (ISP)**
- **Dependency Inversion Principle (DIP)**
- **Significance:** Helps in writing scalable, maintainable, and robust code.Keep this cheat sheet handy for a quick revision!