FitzAfful

import UIKit
import Combine

class CombineController: UIViewController {

	@IBOutlet weak var tableView: UITableView!
	@IBOutlet weak var emptyView: UIView!
	@IBOutlet weak var activityIndicator: UIActivityIndicatorView!

    	lazy var viewModel: CombineViewModel = {

FitzAfful

import Foundation
import Alamofire
import Combine

class CombineViewModel: ObservableObject {

    var apiManager: APIManager?
    @Published var employees: [Employee] = [] //1

    init(manager: APIManager = APIManager()) {

FitzAfful

import RxSwift
import RxCocoa

class RxSwiftController: UIViewController {

	@IBOutlet weak var tableView: UITableView!
	@IBOutlet weak var emptyView: UIView!
	@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
    	let disposeBag = DisposeBag()

FitzAfful

import Foundation
import Alamofire
import RxSwift
import RxCocoa

class RxSwiftViewModel {

    private let disposeBag = DisposeBag()
    private let _employees = BehaviorRelay<[Employee]>(value: [])
    private let _error = BehaviorRelay<Bool>(value: false)

FitzAfful

 /********* Binding to array in viewDidLoad */
  viewModel.employees.bind { (_) in
    self.showTableView()
  }
 /********************************/

FitzAfful

func setupEventBusSubscriber() {
    _ = EventBus.onMainThread(self, name: "fetchEmployees") { result in
        if let event = result!.object as? EmployeesEvent {
            if event.employees != nil {
                self.showTableView()
            } else if let message = event.errorMessage {
                self.showAlert(title: "Error", message: message)
            }
        }
    }

FitzAfful

func callEvent() {
    //Post Event (Publish Event)
    EventBus.post("fetchEmployees", sender: EmployeesEvent(error: error, errorMessage: errorMessage, employees: employees))
}

FitzAfful

import Foundation

class EmployeesEvent: NSObject {
    var error: Bool
    var errorMessage: String?
    var employees: [Employee]?

    init(error: Bool, errorMessage: String? = nil, employees: [Employee]? = nil) {
        self.error = error
        self.errorMessage = errorMessage

FitzAfful

import Foundation

open class EventBus {

    struct Static {
        static let instance = EventBus()
        static let queue = DispatchQueue(label: "EventBus", attributes: [])
    }

FitzAfful

import Foundation
import Alamofire

protocol ObservableViewModelProtocol {
    func fetchEmployees()
    func setError(_ message: String)
    var employees: Observable<[Employee]> { get  set } //1
    var errorMessage: Observable<String?> { get set }
    var error: Observable<Bool> { get set }
}