How is adding a new record to a data structure Map implemented?

Inheritance is a mechanism of object-oriented programming that allows one class (the subclass or derived class) to inherit properties and methods from another class (the superclass or base class).

Key concepts:

• Code reuse: Inheritance allows the subclass to use existing code from the superclass, avoiding duplication.
• is-a relationship: Inheritance models an "is-a" relationship. For example, "A dog is a mammal".
• Extension: The subclass can add new properties and methods or override existing methods of the superclass to change its behavior.

In Swift:

• Inheritance is supported for classes. Structures and enumerations do not support inheritance.
• The keyword class is used.
• The subclass is specified after a colon and the name of the superclass.
• Superclass methods can be overridden using the override keyword.
• Access to the superclass implementation is done through the super keyword.

Example:

class Animal {
    var name: String

    init(name: String) {
        self.name = name
    }

    func makeSound() {
        print("Unknown sound")
    }
}

class Dog: Animal {
    func bark() {
        print("Woof!")
    }

    override func makeSound() {
        print("Woof-woof!")
    }
}

let myDog = Dog(name: "Baron")
myDog.makeSound() // Output: Woof-woof!
myDog.bark() // Output: Woof!

It is important to remember that excessive or improper use of inheritance can lead to problems with flexibility and code maintenance complexity (for example, the "fragile base class problem"). In Swift, other mechanisms such as composition and protocols are often preferred to achieve flexibility.