Swift

In Swift, you can add multiple init methods to a class by writing a convenience init method in an extension. For example, let’s create a Fruit class and add a second init method to it: Now you can use either one of the init methods. The Swift compiler determines which one to use based on […]

In Swift, the forEach function is used to perform an operation for each element in an array. For example, let’s print out an array of names using the forEach function: Output: In this guide, you learn how to use the forEach function to iterate over collections and ranges in Swift. ForEach Function in Swift In

In Swift, a for loop is used to repeat code. Commonly, you use for loops to iterate over collections in Swift. For example, let’s loop through a list of names using a for loop: Output: Here is a flowchart that depicts a for loop in Swift. In this guide, you learn everything about for loops

To initialize a struct in Swift, you do not need to write the init method. This is because, by default, there is a memberwise initializer that does the job behind the scenes. For instance: As you can see, this structure does not implement an init method. But you can create a Fruit object like this:

In Swift, didSet and willSet methods act as property observers. For example: Output: Here assigning “Jack” to name triggered both willSet and didSet blocks. In this article, we are going to take a deeper dive into property observers in Swift. In essence, you are going to learn: Property Observers in Swift In Swift, you can

The difference between == and === in Swift is: Also, the == operator is overridable for custom types, meanwhile === is not. In this guide, you are going to take a look at what these differences mean and what gives rise to them in Swift. == Operator in Swift The double-equals operator (==) in Swift

To convert an array to string in Swift, call Array.joined() function. For instance, let’s combine a list of names into a string that separates the names with a space: Output: 1. The Array.joined() Function in Swift The Array.joined() function in Swift can be called to create a string based on the elements of the array.

In Swift, [weak self] creates a weak reference to self in a closure. This prevents memory leaks due to strong reference cycles. However, to truly understand what this means, you need to understand the following concepts: In this guide, you are going to take a thorough look at each of these concepts. Finally, you are

To check if an element is in an array in Swift, use the Array.contains() function. For example, let’s check if the name “Alice” is in an array of names: Output: Let’s see a more advanced example. Check If an Array Contains an Object with Specific Property You can use the contains() function in a more

To split a string to an array in Swift by a character, use the String.split(separator:) function. For example, let’s split a string by commas: Output: However, this requires that the separator is a singular character, not a string. To split a string to an array by a separator string, use String.components(separatedBy:) function. For example, let’s