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Can you explain the principles of object-oriented programming?

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Answer from AI

Object-oriented programming (OOP) is built on four main principles:

  1. Encapsulation — combining data and methods that operate on that data into a single object. This allows hiding internal implementation details and protecting data from direct external access.

  2. Inheritance — a mechanism that allows creating new classes based on existing ones, inheriting their properties and methods, which promotes code reuse.

  3. Polymorphism — the ability of objects of different classes to respond to the same messages (method calls) in different ways, simplifying code extension and maintenance.

  4. Abstraction — highlighting essential characteristics of an object while hiding non-essential details, helping to focus on important functionality.

Example in JavaScript (Node.js):

class Animal {
  constructor(name) {
    this.name = name;
  }

  speak() {
    console.log(`${this.name} makes a sound.`);
  }
}

class Dog extends Animal {
  speak() {
    console.log(`${this.name} barks.`);
  }
}

const dog = new Dog('Bobic');
dog.speak(); // Bobic barks.

Here, the Dog class inherits from Animal, overrides the speak method (polymorphism), and data and methods are encapsulated within the class (encapsulation).

Can you explain the principles of object-oriented… - sobes.tech