DaveWoodCom

extension String {
    func isValidEmail() -> Bool {
        guard !self.lowercaseString.hasPrefix("mailto:") else { return false }
        guard let emailDetector = try? NSDataDetector(types: NSTextCheckingType.Link.rawValue) else { return false }
        let matches = emailDetector.matchesInString(self, options: NSMatchingOptions.Anchored, range: NSRange(location: 0, length: self.characters.count))
        guard matches.count == 1 else { return false }
        return matches[0].URL?.scheme == "mailto"
    }
}

brennanMKE

import PlaygroundSupport
import Foundation

class Worker {
    
    private let queue = DispatchQueue.global(qos: .background)
    private let serialQueue = DispatchQueue(label: "com.acme.serial")
    public private(set) var count = 0
    
    func incrementCount() {

freak4pc

//
//  Combine+WithLatestFrom.swift
//
//  Created by Shai Mishali on 29/08/2019.
//  Copyright © 2019 Shai Mishali. All rights reserved.
//

import Combine

// MARK: - Operator methods

strzempa

import UIKit
import WebKit

open class ProgressObservableWebViewController: UIViewController, WKWebViewProgressObservable {
    @IBOutlet weak public var webView: WKWebView!
    
    public var webViewProgressObservation: Any?
        
    private let progressView: UIProgressView = {
        let view = UIProgressView(progressViewStyle: .default)

strzempa

import Foundation

public extension UIApplication {
    class func tryURL(_ urls: [String]) {
        let application = UIApplication.shared
        urls.forEach { urlString in
            guard let url = URL(string: urlString) else {
                Logger.error?.message("Cannot make url from: \(urlString)")
                return
            }

strzempa

import UIKit

public protocol UITableViewHeaderFooterViewIdentifiable: UITableViewHeaderFooterView {
    static var identifier: String { get }
}

public extension UITableViewHeaderFooterViewIdentifiable where Self: UITableViewHeaderFooterView {
    static var identifier: String {
        return String(describing: self)
    }

KaQuMiQ

import Foundation
import CommonCrypto

internal enum CryptoError: Error {
  case emptyData
  case invalidData
  case invalidKey
  case fail(status: CCStatus)
}

KaQuMiQ

e print(String(data: JSONSerialization.data(withJSONObject: JSONSerialization.jsonObject(with: data, options: []), options: .prettyPrinted), encoding: .utf8)!)

KaQuMiQ

extension NSLayoutManager {
    var numberOfLines: Int {
        var linesCount: Int = 0
        var idx: Int = 0
        let lineRange: NSRangePointer = .allocate(capacity: 1)
        while idx < numberOfGlyphs {
            lineFragmentRect(forGlyphAt: idx, effectiveRange: lineRange)
            idx = NSMaxRange(lineRange.pointee)
            linesCount += 1
        }

KaQuMiQ

import UIKit

public final class TextView: UITextView {
  
  public override init(frame: CGRect, textContainer: NSTextContainer?) {
    super.init(frame: frame, textContainer: textContainer)
    layoutManager.delegate = self
    isScrollEnabled = false
  }