Swift World: Design Patterns — Simple Factory

If we want to learn a programming language, we need to live with it. It means to use Swift as much as possible. Today, we will start talking about design patterns in Swift. In addition to simple explanation, we also try to give figures, samples, use…

Swift World: Design Patterns — Factory Method

Do you remember the Simple Factory Pattern we talked about in last article?

Swift World: Design Patterns — Abstract Factory

Today we will talk about abstract factory pattern. It handles a little more complex use case. As we know, the sedan family has different models like compact, mid-size and full-size.SUV has same categories. Let’s assume we have two factories. One…

Swift World: Design Patterns — Mediator

Today we will talk about mediator pattern. Let’s start with a scenario in real world instead of explaining abstract definition. In a team, there are PM, developer and QE. When the developer completes coding for a new feature, the codes are committed to the…

Swift World: Design Patterns — Adapter

We have finished creational patterns and will introduce structural patterns from this article. Literally, structural patterns are about structure. It means how to organize classes or instances to form larger structures. The first we will talk about is adapter…

Swift World: Design Patterns — Bridge

Do you remember our system structure for car? We have a protocol and different implements like the code below.

protocol Car {
    func drive()
}

class Sedan: Car {
    func drive() {
        print("drive a…

Swift World: Design Patterns — Decorator

Decorator is a structural pattern to add new functions to class or instance at runtime. Compared to inheritance, it has more advantages in flexibility and scalability. We will still use our car model in this article.

Swift World: Design Patterns — Proxy

Today, we will talk about proxy pattern. In this pattern, proxy is an object to help us to access another object. It simply delegates real job to that object or change its behavior. The following figure depicts the roles and their relationships.

Swift World: Design Patterns — Builder

Normally, while building a car, we build every part first and then assemble them up. As customers, we don’t need to know how to produce every component. It’s the producer’s job to produce a functional car according to our requirements.