Can you name the main types of closures used in programming?

In iOS programming (Swift/Objective-C), closures are blocks of code that can be passed around and used as objects.

Main types of closures:

• Escaping closures — closures that can be called after the function they were passed to has exited. For example, asynchronous operations.

• Non-escaping closures — closures that are called within the function and are not stored for later use.

• Autoclosures — closures that are automatically created by the compiler for deferred expression evaluation, often used for optimization.

Example of an escaping closure in Swift:

func fetchData(completion: @escaping (String) -> Void) {
    DispatchQueue.global().async {
        // simulate data loading
        let data = "Data loaded"
        completion(data)
    }
}

fetchData { result in
    print(result)
}

Here, completion is an escaping closure because it is called asynchronously after the function exits.