Monntay’s gists

Monntay / asyncAwaitInCombine.swift

Last active March 1, 2022 19:52

async await in combine

	extension Publisher {

	func awaitSink(cancellable: inout Set<AnyCancellable>) async throws -> Output {

	return try await withCheckedThrowingContinuation { continuation in

	self.sink { completion in
	switch completion {
	case .finished:
	break

Monntay / RxExtensionMVVM.swift

Created May 5, 2020 14:22

	import UIKit
	import RxCocoa
	import RxSwift

	extension Reactive where Base: UIImageView {

	func image(withDuration: TimeInterval) -> Binder<UIImage?> {
	return Binder(base) { imageView, image in

	// needed to avoid "Value of type 'UIView' has no member 'image'"

Monntay / ViewControllerMVVM.swift

Created May 5, 2020 13:56

The view controller of the MVVMRx example

	import UIKit
	import RxCocoa
	import RxSwift

	class ViewController: UIViewController {

	@IBOutlet weak var imageView: UIImageView!
	@IBOutlet weak var label: UILabel!
	@IBOutlet weak var nextButton: UIButton!

Monntay / ViewModelMVVMRx.swift

Last active May 5, 2020 13:40

ViewModel Example with Rx

	import Foundation
	import RxSwift
	import RxCocoa

	class ViewModel {

	private let imageRelay: BehaviorRelay<UIImage?> = BehaviorRelay(value: nil)
	private let labelTextRelay: BehaviorRelay<String?> = BehaviorRelay(value: nil)

	var buttonTapRelay = PublishRelay<Void>()

Monntay / MigrationPolicy.swift

Created October 21, 2019 08:20

	class MigrationPolicy: NSEntityMigrationPolicy {

	override func createDestinationInstances(forSource sInstance: NSManagedObject, in mapping: NSEntityMapping, manager: NSMigrationManager) throws {
	// MARK: 1 - Check if it is a person
	if sInstance.entity.name == "Person" {

	// MARK: 2 - fetch the values
	let firstName = sInstance.primitiveValue(forKey: "firstname") as? String
	let lastName = sInstance.primitiveValue(forKey: "lastname") as? String
	let age = sInstance.primitiveValue(forKey: "age") as? String

Monntay / CoreDataMigrationGuideTests_3_4.swift

Last active October 19, 2019 05:59

CoreData Heavy Migration Test 2

	// we will test the migration from version 1 to 2. the names of a person changed.
	func testHeavyWeightMigration() {
	// MARK: 1 read and load the old model
	let oldModelURL = Bundle(for: AppDelegate.self).url(forResource: "CoreDataMigrationGuide.momd/CoreDataMigrationGuide 3", withExtension: "mom")!
	let oldManagedObjectModel = NSManagedObjectModel(contentsOf: oldModelURL)
	XCTAssertNotNil(oldManagedObjectModel)

	let coordinator = NSPersistentStoreCoordinator(managedObjectModel: oldManagedObjectModel!)

	try! coordinator.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: url, options: nil)

Monntay / CoreDataMigrationGuideTests_2_3.swift

Last active October 19, 2019 05:58

CoreData heavy Migration Test 1

	// we will test the migration from version 1 to 2. the names of a person changed.
	func testHeavyWeightMigration() {
	// MARK: 1 - read and load the old model
	let oldModelURL = Bundle(for: AppDelegate.self).url(forResource: "CoreDataMigrationGuide.momd/CoreDataMigrationGuide 2", withExtension: "mom")!
	let oldManagedObjectModel = NSManagedObjectModel(contentsOf: oldModelURL)
	XCTAssertNotNil(oldManagedObjectModel)

	let coordinator = NSPersistentStoreCoordinator(managedObjectModel: oldManagedObjectModel!)

	try! coordinator.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: url, options: nil)

Monntay / CoreDataMigrationGuideTests_1_2.swift

Last active October 18, 2019 14:41

CoreData lightweight Migration test

	// we will test the migration from version 1 to 2. the names of a person changed.
	func testLightWeightMigration() {
	// MARK: 1 - read and load the old model
	let oldModelURL = Bundle(for: AppDelegate.self).url(forResource: "CoreDataMigrationGuide.momd/CoreDataMigrationGuide", withExtension: "mom")!
	let oldManagedObjectModel = NSManagedObjectModel(contentsOf: oldModelURL)
	XCTAssertNotNil(oldManagedObjectModel)

	let coordinator = NSPersistentStoreCoordinator(managedObjectModel: oldManagedObjectModel!)

	try! coordinator.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: url, options: nil)