wotjd

import UIKit
import Foundation

let queue = DispatchQueue(label: "wotjd", attributes: .concurrent)

func sendMessage(str: String, pendingTime: UInt32, completion: @escaping () -> Void) {
    queue.async {
        sleep(pendingTime)
        print(str)
        completion()

wotjd

//
//  StackViewController.swift
//  TableViewTest
//
//  Created by edge on 06/11/2018.
//  Copyright © 2018 castis. All rights reserved.
//

import UIKit

wotjd

import UIKit

class HighlightButton: UIButton {
  @IBInspectable var highlightTintColor : UIColor?
  private var prevTintColor : UIColor?
  
  override var isHighlighted : Bool {
    didSet {
      if self.isHighlighted != oldValue {
        self.prevTintColor = self.tintColor

wotjd

import UIKit

class ToggleButton: UIButton {
    @IBInspectable var toggledTintColor : UIColor?
    private var prevTintColor : UIColor?
    
    var isOn : Bool = false
    
    convenience init() {

wotjd

extension String {
    func isNewer(than compareVersion: String) -> Bool {
        if self.compare(compareVersion, options: NSString.CompareOptions.numeric) == ComparisonResult.orderedDescending {
            return true
        }
        return false
    }
}

wotjd

import Foundation

/// RepeatingTimer mimics the API of DispatchSourceTimer but in a way that prevents
/// crashes that occur from calling resume multiple times on a timer that is
/// already resumed (noted by https://github.com/SiftScience/sift-ios/issues/52
class RepeatingTimer {
  // MARK: State
  private enum State {
    case suspended
    case resumed

wotjd

import UserNotification

struct LocalNotification {
  static func isDuplicatedNotification(identifier: String, completion: @escaping (Bool) -> () = {_ in}) {
      UNUserNotificationCenter.current().getPendingNotificationRequests { notifications in
          let dumNotis = notifications.filter { $0.identifier == identifier }
          completion(!dumNotis.isEmpty)
      }
  }

wotjd

import Foundation 

protocol Engine {
    func startEngine()
    func stopEngine()
}

class TrainEngine : Engine {
    func startEngine() {
        print("Engine started")

wotjd

import Foundation

public func FuntionScope(_ closure: () -> () ) {
    closure()
}

public let TupleScope = { (c: () -> ()) in c() }
public let TupleExpScope: (() -> ()) -> () = { $0() }

// adding closure typealias

wotjd

import Foundation

let uuid = NSUUID().uuidString                  //"3B156152-8CD1-4845-A85C-1722AACC2453"
uuid.replacingOccurrences(of: "-", with: "")    //"3B1561528CD14845A85C1722AACC2453"