The below code example in Swift demonstrates how you can extend classes in Swift. Extending Class in Swift As an example, let’s learn how we can extend class Int.  Create a new Swift file in your current project and add there the following extension with a function that substructs a value. extension Int { func…

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The below Swift code example demonstrates how to implement the Singleton Design Pattern in Swift. Singleton Design Pattern guarantees that only one Object of a class exists in the system even if a developer attempts to create multiple instances of it. Singleton Class example in Swift // Creating Singleton // Only one instance of this…

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In Swift, a class or a struct can have multiple initializers which are used to create an instance of that particular type and set up its initial state. The code examples below show how to define a class with single or multiple initializers and how to create an instance of that class. Single Initializer class…

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