Add examples project

Examples/GitHub Search/GitHubSearchWithSwiftUI/AppDelegate.swift

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+//
+//  AppDelegate.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
+
+    func applicationWillTerminate(_ application: UIApplication) {
+        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+    }
+
+    // MARK: UISceneSession Lifecycle
+
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+
+
+}
+

Examples/GitHub Search/GitHubSearchWithSwiftUI/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Base.lproj/LaunchScreen.storyboard

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

Examples/GitHub Search/GitHubSearchWithSwiftUI/Extension/Combine.swift

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+//
+//  Combine.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Foundation
+
+struct CombineExtension<Base> {
+    let base: Base
+
+    init(_ base: Base) {
+        self.base = base
+    }
+}
+
+protocol CombineCompatible {
+    associatedtype CombineExtensionBase
+
+    static var combine: CombineExtension<CombineExtensionBase>.Type { get set }
+    var combine: CombineExtension<CombineExtensionBase> { get set }
+}
+
+extension CombineCompatible {
+
+    static var combine: CombineExtension<Self>.Type {
+        get {
+            return CombineExtension<Self>.self
+        }
+        set {}
+    }
+
+    var combine: CombineExtension<Self> {
+        get {
+            return CombineExtension<Self>(self)
+        }
+        set {}
+    }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Extension/JSONDecoder.Extension.swift

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+//
+//  JSONDecoder.Extension.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/06.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Combine
+import Foundation
+
+extension JSONDecoder: TopLevelDecoder {}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Extension/URLSession.Combine.swift

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+//
+//  URLSession.Combine.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Combine
+import Foundation
+
+extension URLSession: CombineCompatible {}
+
+extension CombineExtension where Base == URLSession {
+
+    func send(request: URLRequest) -> AnyPublisher<Data, URLSessionError> {
+
+        AnyPublisher<Data, URLSessionError> { [base] subscriber in
+
+            let task = base.dataTask(with: request) { data, response, error in
+
+                guard let response = response as? HTTPURLResponse else {
+                    subscriber.receive(completion: .failure(.invalidResponse))
+                    return
+                }
+
+                guard 200..<300 ~= response.statusCode else {
+                    let e = URLSessionError.serverError(statusCode: response.statusCode,
+                                                        error: error)
+                    subscriber.receive(completion: .failure(e))
+                    return
+                }
+
+                guard let data = data else {
+                    subscriber.receive(completion: .failure(.noData))
+                    return
+                }
+
+                if let error = error {
+                    subscriber.receive(completion: .failure(.unknown(error)))
+                } else {
+                    _ = subscriber.receive(data)
+                    subscriber.receive(completion: .finished)
+                }
+            }
+
+            // TODO: cancel task when subscriber cancelled
+            task.resume()
+        }
+    }
+}
+
+enum URLSessionError: Error {
+    case invalidResponse
+    case noData
+    case serverError(statusCode: Int, error: Error?)
+    case unknown(Error)
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UILaunchStoryboardName</key>
+					<string>LaunchScreen</string>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

Examples/GitHub Search/GitHubSearchWithSwiftUI/Model/ItemResponse.swift

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+//
+//  ItemResponse.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/06.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Foundation
+
+struct ItemResponse<T: Decodable>: Decodable {
+    let items: [T]
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Model/Repository.swift

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+//
+//  Repository.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Foundation
+
+struct Repository: Decodable {
+    let id: Int
+    let fullName: String
+    let description: String?
+    let stargazersCount: Int
+    let htmlUrl: URL
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Model/RepositoryAPI.swift

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+//
+//  RepositoryModel.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/06.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Combine
+import Foundation
+
+enum RepositoryAPI {
+
+    static func search(query: String) -> AnyPublisher<[Repository], Error> {
+
+        guard var components = URLComponents(string: "https://api.github.com/search/repositories") else {
+            return Publishers.Empty<[Repository], Error>().eraseToAnyPublisher()
+        }
+        components.queryItems = [URLQueryItem(name: "q", value: query)]
+
+        guard let url = components.url else {
+            return Publishers.Empty<[Repository], Error>().eraseToAnyPublisher()
+        }
+
+        var request = URLRequest(url: url)
+        request.addValue("application/json", forHTTPHeaderField: "Content-Type")
+        let decoder = JSONDecoder()
+        decoder.keyDecodingStrategy = .convertFromSnakeCase
+        return URLSession.shared.combine.send(request: request)
+            .decode(type: ItemResponse<Repository>.self, decoder: decoder)
+            .map { $0.items }
+            .handleEvents(receiveOutput: { print($0) },
+                          receiveCompletion: { print($0)})
+            .eraseToAnyPublisher()
+    }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/Preview Content/Preview Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/SceneDelegate.swift

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+//
+//  SceneDelegate.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import UIKit
+import SwiftUI
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+
+    var window: UIWindow?
+
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
+        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
+        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
+
+        // Use a UIHostingController as window root view controller
+        let window = UIWindow(frame: UIScreen.main.bounds)
+        window.rootViewController = UIHostingController(rootView:
+            RepositoryListView().environmentObject(RepositoryListViewModel())
+        )
+        self.window = window
+        window.makeKeyAndVisible()
+    }
+
+    func sceneDidDisconnect(_ scene: UIScene) {
+        // Called as the scene is being released by the system.
+        // This occurs shortly after the scene enters the background, or when its session is discarded.
+        // Release any resources associated with this scene that can be re-created the next time the scene connects.
+        // The scene may re-connect later, as its session was not neccessarily discarded (see `application:didDiscardSceneSessions` instead).
+    }
+
+    func sceneDidBecomeActive(_ scene: UIScene) {
+        // Called when the scene has moved from an inactive state to an active state.
+        // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
+    }
+
+    func sceneWillResignActive(_ scene: UIScene) {
+        // Called when the scene will move from an active state to an inactive state.
+        // This may occur due to temporary interruptions (ex. an incoming phone call).
+    }
+
+    func sceneWillEnterForeground(_ scene: UIScene) {
+        // Called as the scene transitions from the background to the foreground.
+        // Use this method to undo the changes made on entering the background.
+    }
+
+    func sceneDidEnterBackground(_ scene: UIScene) {
+        // Called as the scene transitions from the foreground to the background.
+        // Use this method to save data, release shared resources, and store enough scene-specific state information
+        // to restore the scene back to its current state.
+    }
+
+
+}
+

Examples/GitHub Search/GitHubSearchWithSwiftUI/View/RepositoryListView.swift

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+//
+//  RepositoryListView.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import SwiftUI
+
+struct RepositoryListView : View {
+
+    @EnvironmentObject private var viewModel: RepositoryListViewModel
+    @State private var text: String = ""
+
+    var body: some View {
+
+        NavigationView {
+
+            TextField($text,
+                      placeholder: Text("Search reposipories..."),
+                      onCommit: { self.viewModel.search(query: self.text) })
+                .frame(height: 40)
+                .padding(EdgeInsets(top: 0, leading: 8, bottom: 0, trailing: 8))
+                .border(Color.gray, cornerRadius: 8)
+                .padding(EdgeInsets(top: 0, leading: 16, bottom: 0, trailing: 16))
+
+            List {
+
+                ForEach(viewModel.repositories.identified(by: \.id)) { repository in
+                     RepositoryView(repository: repository)
+                }
+            }
+            .navigationBarTitle(Text("Search🔍"))
+        }
+    }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/View/RepositoryListViewModel.swift

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+//
+//  RepositoryListViewModel.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/06.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import Combine
+import Foundation
+import SwiftUI
+
+final class RepositoryListViewModel: BindableObject {
+
+    let didChange: AnyPublisher<RepositoryListViewModel, Never>
+    private let _didChange = PassthroughSubject<RepositoryListViewModel, Never>()
+
+    private let _searchWithQuery = PassthroughSubject<String, Never>()
+    private lazy var repositoriesAssign = Subscribers.Assign(object: self, keyPath: \.repositories)
+
+    private(set) var repositories: [Repository] = [] {
+        didSet {
+            // TODO: Do not want to use DispatchQueue.main here
+            DispatchQueue.main.async {
+                self._didChange.send(self)
+            }
+        }
+    }
+
+    deinit {
+        repositoriesAssign.cancel()
+    }
+
+    init() {
+        self.didChange = _didChange.eraseToAnyPublisher()
+
+        _searchWithQuery
+            .flatMap { query -> AnyPublisher<[Repository], Never> in
+                RepositoryAPI.search(query: query)
+                    .replaceError(with: [])
+                    .eraseToAnyPublisher()
+            }
+            .receive(subscriber: repositoriesAssign)
+    }
+
+    func search(query: String) {
+        _searchWithQuery.send(query)
+    }
+}

Examples/GitHub Search/GitHubSearchWithSwiftUI/View/RepositoryView.swift

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+//
+//  RepositoryView.swift
+//  GitHubSearchWithSwiftUI
+//
+//  Created by marty-suzuki on 2019/06/05.
+//  Copyright © 2019 jp.marty-suzuki. All rights reserved.
+//
+
+import SwiftUI
+
+struct RepositoryView : View {
+
+    let repository: Repository
+
+    var body: some View {
+        
+        VStack(alignment: .leading) {
+
+            HStack {
+                Image(systemName: "doc.text")
+                Text(repository.fullName)
+                    .bold()
+            }
+
+            // Show text if description exists
+            repository.description
+                .map(Text.init)?
+                .lineLimit(nil)
+
+            HStack {
+                Image(systemName: "star")
+                Text("\(repository.stargazersCount)")
+            }
+        }
+    }
+}