achernoprudov

public protocol Analytics {
    typealias Attributes = [String: Any]
    func log(
        event eventName: String,
        with attributes: Attributes?
    )
}

public extension Analytics {
    func log(_ event: AnalyticsEvent) {

achernoprudov

extension UINavigationItem {

  func setTitle(title: String, subtitle: String) {
    let one = UILabel()
    one.text = title
    one.font = UIFont.systemFont(ofSize: 17)
    one.sizeToFit()

    let two = UILabel()
    two.text = subtitle

achernoprudov

/// This is peruly marker protocol,
/// it allows us to keep action list open, and add more actions
/// without breaking existed components.
///
/// Also sometimes it is nice to implement `Codable` or `Equatable`
public protocol Action {}

achernoprudov

/// Utility protocol for cloning objects.
public protocol Clonable {
}

public extension Clonable {
    
    /// Clones object with modifictation:
    ///
    /// Example:
    /// ```

achernoprudov

/// Low-level lock that allows waiters to block efficiently on contention.
///
/// Based on `os_unfair_lock_s`
public class UnfairLock {
  // MARK: - Instance variables

  private var unfairLock = os_unfair_lock_s()

  // MARK: - Public

achernoprudov

import Combine

/// Builds `Publisher` with callable promise that can be cancelled.
/// Used in requests and other cancellable tasks.
///
/// Usage:
/// ```
/// CancellableFuture<String, Error> { promise -> AnyCancellable in
///    let request = buildHttpRequest()
///    request.listenToResponse { result in

achernoprudov

// MARK: - Data

protocol FeedItem {
}

struct ShareFeedItem: FeedItem {
    let id: String
}

// MARK: - Delegates

achernoprudov

extension AnalyticsEvent {
  static func searchForUser(with query: String) -> AnalyticsEvent {
    return AnalyticsEvent(name: "Search for user", attributes: [.query: query])
  }
}

achernoprudov

var actions: [UIAction] = []
actions.append(UIAction(title: "Open", image: UIImage(systemName: "xmark.octagon")) { _ in
    ... 
})
// Sub menu
var subMenuActions: [UIAction] = []
if item.isHidden {
    subMenuActions.append(UIAction(title: "Show", image: UIImage(systemName: "eye")) { _ in
        ...
    })

achernoprudov

UIMenu(children: [
  UIAction(title: "Open", image: UIImage(systemName: "xmark.octagon")) { _ in
    ... 
  },
  UIMenu(title: "Edit", children: [
    item.isHidden 
      ? UIAction(title: "Show", image: UIImage(systemName: "eye")) { _ in
        ...
      }
      : UIAction(title: "Hide", image: UIImage(systemName: "eye.slash")) { _ in