BrandonShega

import Foundation
import Result

public extension Result {
    
    /// Constructs a success wrapping `value`, iff `value` is not nil and `error` is nil.
    ///
    /// Constructs a failure wrapping `error`, iff `error` is not nil and `value` is nil.
    ///
    /// Otherwise, returns nil.

BrandonShega

import Foundation

/// An abstract class that makes building simple asynchronous operations easy.
/// Subclasses must implement `execute()` to perform any work and call
/// `finish()` when they are done. All `NSOperation` work will be handled
/// automatically.
open class AsynchronousOperation: Operation {

    // MARK: - Properties