What are closures in Swift?

What are closures in Swift?

Closures in Swift are self-contained blocks of functionality that can be passed around and used in your code.

Can you give me an example of a closure?

Sure! Here's a simple example:

let greeting = { (name: String) -> String in
    return "Hello, \(name)!"
}
print(greeting("Alice")) // Output: Hello, Alice!

How do closures differ from functions?

Closures can capture and store references to variables and constants from the surrounding context, while functions cannot.

Are there any common use cases for closures?

Yes! Closures are often used for callbacks, event handling, and asynchronous operations in Swift.