Swift

In Swift, there are several ways to convert a dictionary into an array depending on what you want to get from the dictionary. Let’s see the following code examples for more clarity. Using the keys or values property If you......

Overview A Swift dictionary is a collection of unordered and unique key-value pairs. JSON is a lightweight and human-readable format for exchanging data. If you want to convert a dictionary into JSON, this dictionary must......

Using a for-in loop In Swift, you can use a for-in loop to iterate over the key-value pairs of a dictionary. Each item in the dictionary is returned as a (key, value) tuple, and you can decompose the tuple’s members as explicitly......

When developing apps with Swift, there might be cases where you need to merge two dictionaries, such as: Combining default settings with custom settings: Suppose you have a default dictionary that contains some default settings, and......

This concise, example-based article walks you through a couple of different approaches to checking whether a key exists in a Swift dictionary. Using the keys property and the contains() method Example: var myDict = [ ......

This concise article shows you a couple of different ways to remove a certain key-value pair from a dictionary in Swift. Without any further ado (like talking about the history of Swift and iOS), let’s get our hands dirty with......

There are two ways to add new key values to a given dictionary in Swift. Let’s explore them in this concise example-based article. Using the subscript syntax You can use the subscript syntax to add a new key-value pair to a......

Counting dictionary elements In Swift, you can count the number of elements in a given dictionary by using the count property. This property returns the total number of key-value pairs in the dictionary. Example: //......

Accessing values in a Swift dictionary To access values in a Swift dictionary, you need to use the key as a subscript, such as dictionary[key]. This will return an optional value, which you can unwrap using if let or guard let......

Introduction One of the essential data structures in modern Swift programming is the dictionary. Dictionaries are unordered collections of key-value pairs, where each key maps to a specific value. They provide an efficient way to......

The product of an array in Swift (and other programming languages) is the result of multiplying all the elements of the array together. For example, the product of [2, 3, 4] is 2 * 3 * 4 = 24. This practical, code-centric article will......

In Swift, a JSON object is an instance of the Data class, which is a binary representation of the JSON string, and arrays are one of the most used data structures. This succinct, example-based article will show you a couple of different......