kean

public protocol LayoutItem { // `UIView`, `UILayoutGuide`
    var superview: UIView? { get }
}

extension UIView: LayoutItem {}
extension UILayoutGuide: LayoutItem {
    public var superview: UIView? { owningView }
}

public struct Alignment {

kean

// Version 1: Using initializer directly

struct ContentView: View {
    @State var count = 0
    let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()

    var body: some View {
        VStack {
            Text("container: \(count)")
                .padding()

kean

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

extension NSAttributedString {
    static func make(html: String, size: CGFloat, color: UIColor) -> NSAttributedString? {
        // TODO: Size is configured programatically which means we can
        // change it dynamically if needed (aka dynamic type)

kean

struct ContentView: View {
    @State private var isShowingDetailView = false

    var body: some View {
        NavigationView {
            NavigationLink(destination: Text("Second View"), isActive: $isShowingDetailView) {
                Text("Show Detail")
            }
            .navigationBarTitle("Navigation")
        }

kean

asd

kean

With @inlinable, Swift compiler is able to optimize the entire for in loop away, which is not possible without it.

kean

public struct ImageView: View {
    @ObservedObject var image: FetchImage

    public var body: some View {
        ZStack {
            Rectangle().fill(Color.gray)
            image.view?
                .resizable()
                .aspectRatio(contentMode: .fill)
        }

kean

import Future
import Combine

public extension Future {
    var publisher: Combine.Future<Value, Error> {
        Combine.Future { fulfill in
            self.on(success: {
                fulfill(.success($0))
            }, failure: {
                fulfill(.failure($0))

kean

struct SearchView: View {
    @ObservedObject var viewModel: SearchViewModel

    var body: some View {
        VStack {
            TextField("Search", text: $viewModel.query)
            List(viewModel.songs) {
                Text($0.name)
            }
        }

kean

// A speculative _ViewRendererHost implementation which uses Mirror (Swift reflection) to find all
// of the dynamic properties (`DynamicProperty`) associated with a given view (`View`), observe
// the changes to these properties and automatically refresh the view whenever any of these property change.

protocol _DynamicProperty {
    var objectWillChange: AnyPublisher<Void, Never> { get }
}

extension ObservedObject: _DynamicProperty {
    var objectWillChange: AnyPublisher<Void, Never> {