Tulakshana

class CustomButton: UIButton {
    @IBInspectable private var enabledBackgroundColor: UIColor?
    @IBInspectable private var disabledBackgroundColor: UIColor?
    
    override var isEnabled: Bool {
        set {
            if newValue {
                self.backgroundColor = enabledBackgroundColor
            } else {
                self.backgroundColor = disabledBackgroundColor

Tulakshana

extension UIView {
    
    func frameOfFirstResponder() -> CGRect? {
        if self.isFirstResponder {
            return self.frame
        }
        for view in self.subviews {
            if let frame = view.frameOfFirstResponder() {
                return frame
            }

Tulakshana

    func stringByReplacing(charSet: CharacterSet, with string: String) -> String {
        let components = self.components(separatedBy: charSet)
        return components.joined(separator: string)
    }

Tulakshana

    @IBAction func btnExit0Tapped (sender: UIButton) {
        exit(0) // Not recommended by Apple https://developer.apple.com/library/content/qa/qa1561/_index.html and app crashes
    }
    
    @IBAction func btnSuspendTapped (sender: UIButton) {
        UIControl().sendAction(#selector(URLSessionTask.suspend), to: UIApplication.shared, for: nil) // App exits gracefully
    }
    
    @IBAction func btnFatalErrorTapped (sender: UIButton) {
        fatalError() // App will crash

Tulakshana

//
//  MovieTransitionsVC.swift
//  VideoAnimations
//
//  Created by Tula on 2018-06-14.
//  Copyright © 2018 Tula. All rights reserved.
//

import UIKit
import AVFoundation

Tulakshana

import UIKit

class CustomSlider: UISlider {

    private var toolTip: ToolTipPopupView?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        self.initToolTip()

Tulakshana

import Foundation
import CoreBluetooth
import CoreLocation

class Beacon: NSObject {
    
    static let shared = Beacon()
    
    var localBeacon: CLBeaconRegion!
    var beaconPeripheralData: [String: AnyObject]?

Tulakshana

extension Data {
    private static let mimeTypeSignatures: [UInt8 : String] = [
        0xFF : "image/jpeg",
        0x89 : "image/png",
        0x47 : "image/gif",
        0x49 : "image/tiff",
        0x4D : "image/tiff",
        0x25 : "application/pdf",
        0xD0 : "application/vnd",
        0x46 : "text/plain",

Tulakshana

static func update(modifiedDate: Date, url: URL) {
  do {
    var values = try url.resourceValues(forKeys: [URLResourceKey.contentModificationDateKey])
    values.contentModificationDate = modifiedDate
    try url.setResourceValues(values)
  } catch {
    print(error.localizedDescription)
  }
}

Tulakshana

public class WDMainActivity extends AppCompatActivity implements WifiP2pManager.ConnectionInfoListener {

    private static final String TAG = "WDMainActivity";

    private static final String KEY_BUDDY_NAME = "buddyname";

    private final IntentFilter intentFilter = new IntentFilter();

    private WifiP2pManager.Channel mChannel;
    private WifiP2pManager mManager;