mecid

import UIKit
import BackgroundTasks

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        BGTaskScheduler.shared.register(
            forTaskWithIdentifier: "pl.snowdog.example.train",

mecid

    func applicationDidEnterBackground(_ application: UIApplication) {
        scheduleAppRefresh()
    }

    private func scheduleAppRefresh() {
        do {
            let request = BGAppRefreshTaskRequest(identifier: "pl.snowdog.example.refresh")
            request.earliestBeginDate = Date(timeIntervalSinceNow: 3600)
            try BGTaskScheduler.shared.submit(request)
        } catch {

mecid

import UIKit
import BackgroundTasks

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        BGTaskScheduler.shared.register(
            forTaskWithIdentifier: "pl.snowdog.example.refresh",
            using: DispatchQueue.global()

mecid

let subject = CurrentValueSubject<String, Never>("Hello")
subject.sink { value in print(value) }
subject.send("World")

mecid

@Published private var query: String = ""

private func fetchRepos(matching query: String) {
        $query.flatMap {
            self.githubService
                .search(matching: $0)
                .replaceError(with: [])
            }
            .subscribe(on: DispatchQueue.global())
            .receive(on: OperationQueue.main)

mecid

    private func fetchRepos(matching query: String) {
        githubService
            .search(matching: query)
            .replaceError(with: [])
            .subscribe(on: DispatchQueue.global())
            .receive(on: OperationQueue.main)
            .assign(to: \.repos, on: self)
    }

mecid

private func fetchRepos(matching query: String) {
        githubService
            .search(matching: query)
            .replaceError(with: [])
            .subscribe(on: DispatchQueue.global())
            .receive(on: OperationQueue.main)
            .sink { repos in print("count:", repos.count) }
}

mecid

import UIKit
import Combine

class ViewController: UITableViewController {
    private let githubService: GithubService
    private var cancellable: AnyCancellable?
    private var repos: [Repo] = [] {
        didSet {
            tableView.reloadData()
        }

mecid

import Foundation
import Combine

struct Repo: Decodable {
    var id: Int
    let owner: Owner
    let name: String
    let description: String

    struct Owner: Decodable {

mecid

import UIKit

class StackViewController: UIViewController {
    private let scrollView = UIScrollView()
    private let stackView = UIStackView()

    override func viewDidLoad() {
        super.viewDidLoad()
        view.addSubview(scrollView)
        scrollView.addSubview(stackView)