Higher-order functions in Swift are functions that take other functions as parameters or return functions as output. They enable a functional programming style by allowing you to compose functions, pass behavior as arguments, and manipulate collections with concise and expressive code. Here are some common higher-order functions in Swift with examples: map(_:): filter(_:): reduce(_:combine:): sorted(by:):… Read More »
In Swift, inout is a keyword used to indicate that a parameter is passed by reference and can be modified inside a function, affecting the original value outside the function. This allows a function to modify the value of the parameter and have those changes reflected in the calling scope. Here’s an example to illustrate… Read More »
In SwiftUI, you can create a path with a custom shape by using the Path and Shape types. Here’s a basic example of how to create a custom path with a shape in SwiftUI: In this example: You can modify the path(in:) function to create different custom shapes based on your requirements. SwiftUI provides a… Read More »
In Swift, BlockOperation is a subclass of Operation that allows you to encapsulate the code you want to execute concurrently. You can use it to create operations that consist of one or more blocks of code. Here’s an example of how to use BlockOperation: In this example: The OperationQueue takes care of managing the concurrent… Read More »
In iOS development with Swift, self and Self have distinct meanings and use cases. In the printValue method, self is used to explicitly refer to the value property of the current instance. 2. Self: In this example, Self is used as the return type of the createInstance method. It indicates that the method will return… Read More »
UIKit and SwiftUI are both UI frameworks used in iOS development, but they differ significantly in terms of design, architecture, and development approach. Here are some key differences between UIKit and SwiftUI: 1. Declarative vs Imperative 2. UI Layout 3. Code re-usability 4. Live preview 5. UI Representation 6. State management 7. Adoption and Legacy… Read More »
Swift 4 is a type-safe language which means if a part of your code expects a String, you can’t pass it an Int by mistake. As Swift 4 is type-safe, it performs type-checks when compiling your code and flags any mismatched types as errors. Playground execution failed: error: :6:6: error: cannot assign to ‘let’ value… Read More »