dave256

func unwrap<T1, T2>(optional1: T1?, optional2: T2?) -> (T1, T2)? {
  switch (optional1, optional2) {
    case let (.Some(value1), .Some(value2)):
      return (value1, value2)
    default:
      return nil
  }
}

func unwrap<T1, T2, T3>(optional1: T1?, optional2: T2?, optional3: T3?) -> (T1, T2, T3)? {

dave256

// from: https://twitter.com/jaredsinclair/status/951536021459619840
// typed in from the image, but not checked yet

class NotificationObserver {
    private var observers: [NSObjectProtocol] = []
    private let queue: OperationQueue
    
    init(queue: OperationQueue = .main) {
        self.queue = queue
    }

dave256

import Foundation

extension Array {

    /// move items at indices to index (insert them at index in the order of indices)
    ///
    /// could be useful for dragging and dropping in a table view
    ///
    /// - Parameters:
    ///   - indices: the indices to move

dave256

//
//  ImageTableViewCell.swift
//  Images
//
//  Created by Bart Jacobs on 31/07/2018.
//  Copyright © 2018 Cocoacasts. All rights reserved.
//

import UIKit

dave256

//
//  UIView+RSKeyboardLayoutGuide.swift
//  RSTouchUIKit
//
//  Created by Daniel Jalkut on 12/23/18.
//

import UIKit

// Extends UIView to expose a keyboardLayoutGuide property that can be used to tie a view controller's content

dave256

class EmailAddress:
    def __init__(self, address: str, kind: str = "home"):
         self.address = address
         self.kind = kind
         
class Person:
    def __init__(self, name: str, email: EmailAddress):
        self.name = name
        self.email = email
    

dave256

class Person:
    def __init__(self, name: str, email: str):
        self.name = name
        self.email = email
    
    def emailAddress(self):
        return self.email

dave256

#include <string>
class EmailAddress {
  public:
    EmailAddress(std::string name, std::string kind="home");
    
    std::string address() const { return _email; }
    std::string kind() const { return _kind; }
     
  private:
     std::string _email;

dave256

import Foundation
import Combine

struct APIError: Decodable, Error {
    let statusCode: Int
}

// publisher code based on code in Practical Combine by Donny Wals

extension Decodable {

dave256

//
//  StatefulPreviewWrapper.swift
//  Do It
//
//  Created by Jim Dovey on 10/11/19.
//  Copyright © 2019 Jim Dovey. All rights reserved.
//
import SwiftUI

@available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)