Swift: Introduction to Classes

Introduction to Classes in Swift:

Before getting into actual coding, let’s have a brief introduction to classes in Swift. We’ve used a variety of data types so far, including Int, Double, String, and Bool. We’ve even created our own “type” in our programme by using structs to create blueprints and templates for objects.

Aside from structures, Swift has another construct called a class that can be used as a blueprint or template for an object. An object’s characteristics and behaviours are also defined by its class. While classes and structures have a lot in common, classes have a few extra features that structures don’t:

  • Inheritance is the ability for one class to take on the characteristics of another.
  • Structures are value types, whereas classes are reference types.

Assume Horizon is a company that issues ID badges to its employees. The powers that be decide to have a special version of the badges made for all of the managers at some point down the road.

So, rather than starting from scratch, we’d use the employee badge template to make the manager badge template inheritance! Managers are still employees, but they also have their own security clearance.

We’ll dig deeper into these distinctions later, but first, let’s get classy with Swift!

Helpful Tools:

Here are some useful tools to help you along your journey!

Setting up an IDE (Integrated Development Environment) can be difficult for beginners. The Online Compiler will enable you to run your code inside your browser without the need to install an IDE. If you need a more detailed explanation of a specific topic, the best place to find answers is in the Official Documentation.

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