ios

import SwiftUI

struct PostDetailView: View {
    @StateObject private var viewModel: PostDetailViewModel

    init(postId: Int) {

import Foundation
import Security

enum KeychainError: Error {
    case duplicateItem
    case itemNotFound

import Foundation
import UIKit

// MARK: - Memory Leak Prevention
class ImageDownloader {
    private var tasks: [URL: URLSessionDataTask] = [:]

import CoreData

class CoreDataStack {
    static let shared = CoreDataStack()

    lazy var persistentContainer: NSPersistentContainer = {

import Foundation
import Combine

class NetworkService {
    private let baseURL = "https://api.example.com"
    private var cancellables = Set<AnyCancellable>()

import Foundation

enum UserDefaultsKey: String {
    case username
    case isFirstLaunch
    case lastSyncDate

import Foundation

// MARK: - Basic Codable
struct User: Codable {
    let id: Int
    let username: String

import UIKit

protocol Coordinator: AnyObject {
    var navigationController: UINavigationController { get set }
    var childCoordinators: [Coordinator] { get set }

import SwiftUI

struct PostsListView: View {
    @StateObject private var viewModel = PostsListViewModel()

    var body: some View {

import XCTest
import Combine
@testable import MyApp

class PostsViewModelTests: XCTestCase {
    var viewModel: PostsViewModel!

import UIKit

class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    var window: UIWindow?
    var appCoordinator: AppCoordinator?

import StoreKit

class StoreKitManager: NSObject, ObservableObject {
    static let shared = StoreKitManager()

    @Published var products: [SKProduct] = []