StanislavK

package com.dropbox.android.sample;
import android.os.AsyncTask;
import android.util.Log;

import com.dropbox.client.DropboxAPI;


public class LoginAsyncTask extends AsyncTask<Void, Void, Integer> {
    private static final String TAG = "LoginAsyncTask";

StanislavK

//String extension that checks for an empty (after trimming whitespace) or nil string:
//
// Usage: var isEmpty = String.isNilOrEmpty(myString)
//
// Credit to: Kevin McNeish
// http://iosappsfornonprogrammers.com/forum/index.php?topic=1836.0

extension String {
   public static func isNilOrEmpty(string: String?) -> Bool {
        

StanislavK

extension Double {
    var second:  NSTimeInterval { return self }
    var seconds: NSTimeInterval { return self }
    var minute:  NSTimeInterval { return self * 60 }
    var minutes: NSTimeInterval { return self * 60 }
    var hour:    NSTimeInterval { return self * 3600 }
    var hours:   NSTimeInterval { return self * 3600 }
}

StanislavK

extension Array {
  func combine(separator: String) -> String{
    var str : String = ""
    for (idx, item) in enumerate(self) {
      str += "\(item)"
      if idx < self.count-1 {
        str += separator
      }
    }
    return str

StanislavK

func log(message: String) {
  let thread = Thread.current.isMainThread ? "Main" : "Background"
  print("\(thread) thread: \(message)")
}

StanislavK

import Foundation

extension String {
    
    var isValidEmail: Bool {
        let emailFormat = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let emailPredicate = NSPredicate(format:"SELF MATCHES %@", emailFormat)
        return emailPredicate.evaluate(with: self)
    }
}

StanislavK

import Foundation
import UIKit

class Alert {
    
    class func showBasic(title: String, message: String, vc: UIViewController) {
        let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        vc.present(alert, animated: true)
    }

StanislavK

import Foundation

class TaskManager {
    static let shared = TaskManager()
    
    let session = URLSession(configuration: .default)
    
    typealias completionHandler = (Data?, URLResponse?, Error?) -> Void
    
    var tasks = [URL: [completionHandler]]()

StanislavK

class CustomTextFieldWithPadding: UITextField {
    
    let padding: CGFloat = 16
    
    private var paddingEdgeInsets: UIEdgeInsets {
        return UIEdgeInsetsMake(0, padding, 0, padding)
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)

StanislavK

import UIKit
import SystemConfiguration.CaptiveNetwork

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        print("SSID: \(currentID(for: kCNNetworkInfoKeySSID))\nBSSID: \(currentID(for: kCNNetworkInfoKeyBSSID))")
    }