Can you explain the concept of object-oriented programming and its main principles?

Object-oriented programming (OOP) is a programming paradigm based on the use of objects, which combine data and methods for working with that data.

Main principles of OOP:

• Encapsulation — combining data and methods into a single object, hiding internal implementation and providing access only through a public interface.
• Inheritance — creating new classes based on existing ones, allowing code reuse and extension.
• Polymorphism — objects of different classes respond to the same messages (methods) differently.
• Abstraction — highlighting essential characteristics of an object and hiding non-essential details.

Example in Swift (iOS):

class Animal {
    func makeSound() {
        print("Some sound")
    }
}

class Dog: Animal {
    override func makeSound() {
        print("Bark")
    }
}

let myDog = Dog()
myDog.makeSound()  // Prints: Bark

Here, the Dog class inherits from Animal and overrides the makeSound method, demonstrating inheritance and polymorphism.