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 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

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

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

// adding closure typealias

wotjd

import Foundation 

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

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

wotjd

let intArray = [1,2,3,4,5]

// using for loop
var forResult = [Int]()

for num in intArray {
  forResult.append(num + 1)
}

print(forResult) // [2,3,4,5,6]

wotjd

let intArray = [[1,2],[3,4],[5]]

var flatMapResult = intArray.flatMap { $0 }

print(flatMapResult) // [1,2,3,4,5]