| import Foundation | |
| extension Data { | |
| var prettyPrintedJSONString: NSString? { /// NSString gives us a nice sanitized debugDescription | |
| guard let object = try? JSONSerialization.jsonObject(with: self, options: []), | |
| let data = try? JSONSerialization.data(withJSONObject: object, options: [.prettyPrinted]), | |
| let prettyPrintedString = NSString(data: data, encoding: String.Encoding.utf8.rawValue) else { return nil } | |
| return prettyPrintedString | |
| } |
| /// A type that has an "empty" representation. | |
| public protocol EmptyRepresentable { | |
| static func empty() -> Self | |
| } | |
| extension Array: EmptyRepresentable { | |
| public static func empty() -> Array<Element> { | |
| return Array() | |
| } | |
| } |
| /// RepeatingTimer mimics the API of DispatchSourceTimer but in a way that prevents | |
| /// crashes that occur from calling resume multiple times on a timer that is | |
| /// already resumed (noted by https://github.com/SiftScience/sift-ios/issues/52 | |
| class RepeatingTimer { | |
| let timeInterval: TimeInterval | |
| init(timeInterval: TimeInterval) { | |
| self.timeInterval = timeInterval | |
| } |
| enum HTTPStatusCodes: Int { | |
| // 100 Informational | |
| case Continue = 100 | |
| case SwitchingProtocols | |
| case Processing | |
| // 200 Success | |
| case OK = 200 | |
| case Created | |
| case Accepted | |
| case NonAuthoritativeInformation |
| // | |
| // CoreDataController.swift | |
| // | |
| // Created by Keith Harrison http://useyourloaf.com | |
| // Copyright (c) 2017 Keith Harrison. All rights reserved. | |
| // | |
| // Redistribution and use in source and binary forms, with or without | |
| // modification, are permitted provided that the following conditions are met: | |
| // | |
| // 1. Redistributions of source code must retain the above copyright |
| extension Collection { | |
| func eachConsecutive(_ size: Int) -> Array<SubSequence> { | |
| let droppedIndices = indices.dropFirst(size - 1) | |
| return zip(indices, droppedIndices) | |
| .map { return self[$0...$1] } | |
| } | |
| } |
| // This syntax reflects changes made to the Swift language as of Aug. '16 | |
| extension UIView { | |
| // Example use: myView.addBorder(toSide: .Left, withColor: UIColor.redColor().CGColor, andThickness: 1.0) | |
| enum ViewSide { | |
| case Left, Right, Top, Bottom | |
| } | |
| func timeAgoSinceDate(date:NSDate, numericDates:Bool) -> String { | |
| let calendar = NSCalendar.currentCalendar() | |
| let now = NSDate() | |
| let earliest = now.earlierDate(date) | |
| let latest = (earliest == now) ? date : now | |
| let components:NSDateComponents = calendar.components([NSCalendarUnit.Minute , NSCalendarUnit.Hour , NSCalendarUnit.Day , NSCalendarUnit.WeekOfYear , NSCalendarUnit.Month , NSCalendarUnit.Year , NSCalendarUnit.Second], fromDate: earliest, toDate: latest, options: NSCalendarOptions()) | |
| if (components.year >= 2) { | |
| return String.localizedStringWithFormat(NSLocalizedString("%d years ago", comment: ""), components.year) | |
| } else if (components.year >= 1){ |
| When you get an error code in with the domain kCFStreamErrorDomainSSL, you can generally find the error codes in SecureTransport.h which is in /System/Library/Frameworks/Security.framework. Here are the error codes: | |
| enum { | |
| errSSLProtocol = -9800, /* SSL protocol error */ | |
| errSSLNegotiation = -9801, /* Cipher Suite negotiation failure */ | |
| errSSLFatalAlert = -9802, /* Fatal alert */ | |
| errSSLWouldBlock = -9803, /* I/O would block (not fatal) */ | |
| errSSLSessionNotFound = -9804, /* attempt to restore an unknown session */ | |
| errSSLClosedGraceful = -9805, /* connection closed gracefully */ | |
| errSSLClosedAbort = -9806, /* connection closed via error */ |
A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.
Both UITableView and UICollectionView offer a similar API to register custom cell classes:
public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)