stinger

//: # Swift 3: Working with dates
import Foundation

let date = Date()
let myLocale = Locale(identifier: "bg_BG")

//: ### Setting an application-wide `TimeZone`
//: Notice how we use if-let in case the abbreviation is wrong. It will fallback to the default timezone in that case.
if let myTimezone = TimeZone(abbreviation: "EEST") {
    print("\(myTimezone.identifier)")

stinger

//: # Swift 3: CGD and URLSessionDataTask
import Foundation
import PlaygroundSupport


//: ### Create background queue
let queue = DispatchQueue.global(qos: .background)

//: ### Computed variable
var time:DispatchTime! {

stinger

//: # Swift 3: Base64 encoding and decoding
import Foundation

extension String {
//: ### Base64 encoding a string
    func base64Encoded() -> String? {
        if let data = self.data(using: .utf8) {
            return data.base64EncodedString()
        }
        return nil

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//: # Swift 3: Using URLComponents
import Foundation

//: ### Compose the componens
var url = URLComponents()
url.scheme = "http"
url.host = "google.com"
//: ### Pass the query string parameters
url.queryItems = [
    URLQueryItem(name: "test", value: "data"),

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//: # Swift 3: URLSessionDelegate
//: The following example shows how to use `OperationQueue` to queue the network requests. This is useful in many ways (for delaying queued requests when the networking goes down for example)

import Foundation
import PlaygroundSupport

class Requester:NSObject {

    let opQueue = OperationQueue()
    var response:URLResponse?

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//: # Swift 3: JSON-serializable structs using protocols
//: Most of the implementation is based on the code in [this blog post](http://codelle.com/blog/2016/5/an-easy-way-to-convert-swift-structs-to-json/)
import Foundation

//: ### Defining the protocols
protocol JSONRepresentable {
    var JSONRepresentation: Any { get }
}

protocol JSONSerializable: JSONRepresentable {}

stinger

import UIKit
import MapKit

extension MKMapView {

    func showLocation(at coordinate: CLLocationCoordinate2D) {
        self.removeOverlays(self.overlays)
        self.removeAnnotations(self.annotations)

        let annotation = MKPointAnnotation()

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func showPushNotification(title: String, details: String) {
  if #available(iOS 10.0, *) {
    let interval = TimeInterval(1)
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: false)
    let content = UNMutableNotificationContent()
    content.title = title
    content.body = details
    let req = UNNotificationRequest(identifier: "localPushNotification", content: content, trigger: trigger)
    let center = UNUserNotificationCenter.current()
    center.getNotificationSettings(completionHandler: { settings in

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import UIKit

final class SDPresentationManager: NSObject, UIViewControllerTransitioningDelegate {

  func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
    return SDModalPresentationController(presentedViewController: presented, presenting: source)
  }

  func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return SDModalTransitionPresentationAnimator()

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// Add the following to the Info.plist
// <key>NSCameraUsageDescription</key>
// <string>Allow our app to take photos</string>

AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo, completionHandler: {[weak self] status in
	if status {
		let session = AVCaptureSession()
		for device in AVCaptureDevice.devices() {
			if let device = device as? AVCaptureDevice, device.position == AVCaptureDevicePosition.back {
				self.device = device