matteodanelli

var mySingleton = (function() {

  var instance;

  function init() {
    // Private methods and variables
    function privateMethod() {
      console.log("I am private");
    }

matteodanelli

extension UIWindow {
    
    func visibleViewController() -> UIViewController? {
        if let rootViewController: UIViewController = self.rootViewController {
            return UIWindow.getVisibleViewControllerFrom(vc: rootViewController)
        }
        return nil
    }
    
    class func getVisibleViewControllerFrom(vc:UIViewController) -> UIViewController {

matteodanelli

// Info.plist requires "Privacy - Photo Library Additions Usage Description"

UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)

matteodanelli

struct Device {
    // iDevice detection code
    static let IS_IPAD             = UIDevice.current.userInterfaceIdiom == .pad
    static let IS_IPHONE           = UIDevice.current.userInterfaceIdiom == .phone
    static let IS_RETINA           = UIScreen.main.scale >= 2.0
    
    static let SCREEN_WIDTH        = Int(UIScreen.main.bounds.size.width)
    static let SCREEN_HEIGHT       = Int(UIScreen.main.bounds.size.height)
    static let SCREEN_MAX_LENGTH   = Int( max(SCREEN_WIDTH, SCREEN_HEIGHT) )
    static let SCREEN_MIN_LENGTH   = Int( min(SCREEN_WIDTH, SCREEN_HEIGHT) )

matteodanelli

@IBDesignable
class EdgeInsetLabel: UILabel {
    var textInsets = UIEdgeInsets.zero {
        didSet { invalidateIntrinsicContentSize() }
    }

    override func textRect(forBounds bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
        let insetRect = UIEdgeInsetsInsetRect(bounds, textInsets)
        let textRect = super.textRect(forBounds: insetRect, limitedToNumberOfLines: numberOfLines)
        let invertedInsets = UIEdgeInsets(top: -textInsets.top,

matteodanelli

fileprivate extension Selector {
    static let buttonTapped = #selector(ViewController.buttonTapped)
    static let deviceOrientationDidChange = #selector(ViewController.deviceOrientationDidChange)
}

// Example on how to use it
NotificationCenter.default.addObserver(self, selector: .deviceOrientationDidChange, 
                                       name: NSNotification.Name.UIDeviceOrientationDidChange, 
                                       object: nil)

matteodanelli

class ImagePicker: UIViewController, UINavigationControllerDelegate {
    
    @IBOutlet var pictureView: UIImageView!
    
    func tapAddPicture(_ sender: Any) {
        let imagePickerController = UIImagePickerController()
        imagePickerController.delegate = self
        imagePickerController.mediaTypes = ["public.image", "public.movie"]
        let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
        actionSheet.addAction(UIAlertAction(title: "Take Photo", style: .default, handler: { (action:UIAlertAction) in

matteodanelli

import UIKit

extension UIButton {
  	// Animate a button, adding effect of "something went wrong". Useful for login button for example.
	func wiggle() {
		let wiggleAnim = CABasicAnimation(keyPath: "position")
		wiggleAnim.duration = 0.05
		wiggleAnim.repeatCount = 5
		wiggleAnim.autoreverses = true
		wiggleAnim.fromValue = CGPoint(x: self.center.x - 4.0, y: self.center.y)

matteodanelli

import Foundation

func readInput() {
    let numberOfCases = Int(readLine() ?? "0")!
    
    for _case in 0..<numberOfCases {
    	guard let currentLine = readLine() as String! else {
    		return
    	}
    	let lineValues = getIntegersOf(line: currentLine, separatedBy: " ")

matteodanelli

override func numberOfSectionsInTableView(in tableView: UITableView) -> Int {
    return NUMBER_OF_SECTIONS
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return NUMBER_OF_ELEMENTS_PER_SECTION
}
    
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "CELL_IDENTIFIER", for: indexPath)