robertmryan

func open(_ filePath: String) throws -> NSArray {
    let data = try Data(contentsOf: URL(fileURLWithPath: filePath))
    let object: Any?
    if #available(OSX 10.11, *) {
        object = try NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(data as NSData)
    } else {
        let unarchiver = NSKeyedUnarchiver(forReadingWith: data)
        object = unarchiver.decodeObject(forKey: "root")
    }
    guard let unarchivedObject = object else {

robertmryan

- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIImage *image = [UIImage imageNamed:@"test.png"];
    self.imageView.image = [self blackAndWhiteFromImage:image];
}

- (UIImage * _Nullable)makeBlackPixelsRedInImage:(UIImage *)image {
    UInt32 black = [self pixelFromRed:0 green:0 blue:0 alpha:255];
    UInt32 red = [self pixelFromRed:255 green:0 blue:0 alpha:255];

robertmryan

// I'd define a Swift struct that captures all of the needed `Complex` arithmetic:

/// Complex number

struct Complex {
    let real: Double
    let imaginary: Double
    
    init(real: Double, imaginary: Double) {
        self.real = real

robertmryan

import UIKit
import os.log

// This reported:
//
// 2016-10-19 21:27:58.383124 MyApp[6452:1422313] about to set to `nil`
// 2016-10-19 21:27:58.383439 MyApp[6452:1422313] set to nil
// 2016-10-19 21:27:58.383711 MyApp[6452:1422313] finished setting to `nil`

class ViewController: UIViewController {

robertmryan

// Swift 2

override func viewDidLoad() {
    super.viewDidLoad()
    
    perform1 {
        self.perform2 {
            self.perform3 {
                print("everything done")
            }

robertmryan

import UIKit

class ChildViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        print("ChildViewController.viewDidLoad")
    }

robertmryan

// Don't declare this `static`, as you never want to be tempted (or accidentally) refer to this static directly:
//
// static AFHTTPSessionManager *requestManager ;

@implementation Mysevers  // this was the name you used

// always use this singleton

+ (AFHTTPSessionManager *)sharedHTTPSession {
    static dispatch_once_t onceToken;

robertmryan

/// Export MPMediaItem to temporary file.
///
/// - Parameters:
///   - assetURL: The `assetURL` of the `MPMediaItem`.
///   - completionHandler: Closure to be called when the export is done. The parameters are a boolean `success`, the `URL` of the temporary file, and an optional `Error` if there was any problem. The parameters of the closure are:
///
///   - fileURL: The `URL` of the temporary file created for the exported results.
///   - error: The `Error`, if any, of the asynchronous export process.

func export(_ assetURL: URL, completionHandler: @escaping (_ fileURL: URL?, _ error: Error?) -> ()) {

robertmryan

import Cocoa

@IBDesignable
class HolyView: NSView {
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)
        
        let center1 = NSPoint(x: bounds.size.width * 0.3 + bounds.origin.x, y: bounds.size.height / 2 + bounds.origin.y)
        let radius1 = bounds.size.width / 6

robertmryan

//  GradientView.swift
//
//  Created by Robert Ryan on 12/29/16.
//  Copyright © 2016 Robert Ryan. All rights reserved.
//

import Cocoa

@IBDesignable
public class GradientView: NSView {