Merge sort is a sorting algorithm that uses a divide-and-conquer approach to sort an array of elements. It's a highly efficient algorithm that is widely used in various applications. In this post, we will implement merge sort in Swift.

Using optional binding is very common in Swift. With the "if let" shorthand syntax it is easier to write and read. It has been introduced with Swift 5.7 and Xcode 14.

Property wrappers enable you to reuse code that specifies the access pattern of a property. Often you add behaviour to a property through its observers. For example, you can use the didSet observer to trim a string: class TestClass { var trimmedString: String = "" { didSet { trimmedString = trimmedString.trimmingCharacters(in: .whitespaces)

Compared to many other programming languages, structs are very powerful in Swift. Hence, they should be used more often. Hint: This post is using Swift 5 Similarities First, let’s start by talking about the similarities between structs and classes. They actually have a lot in common: * they have methods

There are two ways for testing the equality of class instances: reference equality and value equality. In this post we will discuss both of them. Hint: This post is using Swift 4 The Identity Operator === By using the identity operator ===  you can compare the references pointing to the instances of

Sets are one of Swift’s collection types. A set stores an amount of unique values, that have no particular order. You can imagine a set to be like a box of billiard balls: They are all unique in terms of color and number, but they don’t have a

There are two types of properties in Swift: stored properties and computed properties. Stored properties store values (constant or variable) as part of an instance or type, whereas computed properties don’t have a stored value. Hint: This post has been updated to Swift 4  [toc] Video Stored properties Let’

Like categories in Objective-C, extensions in Swift give you the opportunity to add functionality to a type. This is not only possible for your own types, but also for types for which you don’t have access to the source code. Hint: This post is using Swift 3 and Xcode

Encapsulation is one of the most important object-oriented design principles: It hides the internal states and functionality of objects.  You can achieve this by using the access control features of Swift. Why is access control important? As said before, access control is the most important way to achieve a good