omidgolparvar

extension Array {
	var powerset: [[Element]] {
		guard count > 0 else {
			return [[]]
		}
		
		// tail contains the whole array BUT the first element
		let tail = Array(self[1..<endIndex])
		

omidgolparvar

func googleChallenge(number: Int) {
	
	func maximumNumberOfColumn(for n: Int) -> Int {
		var result = 0
		while true {
			result += 1
			if (result * (result + 1)) > (2 * n) {
				return result - 1
			}
		}

omidgolparvar

extension String {
	
	var trimmed: String {
		return self.trimmingCharacters(in: .whitespacesAndNewlines)
	}
	
}

enum Errors: Error {

omidgolparvar

class AClass: NSObject {
	var name: String
	var age: Int
	
	init(name: String, age: Int) {
		self.name = name
		self.age = age
	}
}

omidgolparvar

//
//  MobileProvision.swift
//  Testa
//
//  Created by Omid Golparvar on 4/26/19.
//  Copyright © 2019 Omid Golparvar. All rights reserved.
//

//
//  MobileProvision.swift

omidgolparvar

class Person: NSObject {
	@objc dynamic
	static func Initialize(copyOf instance: Person) -> Person {
		print("Original Initialize(copyOf:).")
		return .init(name: instance.name, age: instance.age)
	}
	
	var name: String
	var age: Int

omidgolparvar

	@IBAction func textFieldEditingChanged(_ sender: UITextField) {
		guard let text = sender.text, !text.isEmpty else { return }
		guard let newString = convertToPersian(from: text) else { return }
		textField.text = newString
	}
	
	func convertToPersian(from string: String) -> String? {
		let englishToPersianDictionary: [String: String] = [
			"0": "۰",

omidgolparvar

import Foundation

func isValidIBAN(_ rawString: String) -> Bool {
	let string = rawString
		.uppercased()
		.filter({ ("A"..."Z" ~= $0) || "0"..."9" ~= $0 })
	
	guard string.count == 26 else { return false }
	
	let newString = String(string.suffix(string.count - 4)) + String(string.prefix(4))

omidgolparvar

func isValidIranNationalCode(_ text: String) -> Bool {
	let string = text.trimmingCharacters(in: .whitespacesAndNewlines)
	guard !string.isEmpty, string.count == 10 else { return false }
	
	let invalidStrings = [
		"0000000000", "1111111111","2222222222","3333333333","4444444444",
		"5555555555", "6666666666","7777777777","8888888888","9999999999"
	]
	guard !invalidStrings.contains(string) else { return false }

omidgolparvar

public extension UIBezierPath {
	
	public static func ID_Initialize(square: CGRect, numberOfSides: UInt, cornerRadius: CGFloat) -> UIBezierPath? {
		guard square.width == square.height
			else { return nil }
		
		let squareWidth = square.width
		
		guard (numberOfSides > 0) && (cornerRadius >= 0.0) && (2.0 * cornerRadius < squareWidth) && !square.isInfinite && !square.isEmpty && !square.isNull