robertmryan

import UIKit
import os.log

private let logger = Logger(subsystem: "MyApp", category: "ViewController")

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

robertmryan

var task: Task<Void, Error>?

func updateLabelAfterAPICall(initialValue: String) {
    task?.cancel() // just in case
    
    task = Task { [weak self] in
        try await Task.sleep(nanoseconds: 5_500_000_000)
        self?.label.text = "New Value after 5.5 seconds passed"
    }
}

robertmryan

class ViewController: UIViewController {
    lazy var animator = UIDynamicAnimator(referenceView: view)

    override func viewDidLoad() {
        super.viewDidLoad()

        let animatedView = UIView(frame: CGRect(x: 120, y: 100, width: 50, height: 50))
        animatedView.transform = CGAffineTransform(rotationAngle: .pi / 4)
        animatedView.backgroundColor = .blue

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struct HoundResponse<T: Decodable>: Decodable {
    var message: T?
    var status: String
}

let url = URL(string: "https://dog.ceo/api/breed/hound/images")!
URLSession.shared.dataTask(with: url) { data, _, error in
    guard let data = data, error == nil else {
        print(error ?? URLError(.badServerResponse))
        return

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func fetchBook(id identifier: String) async throws -> GoogleBook {
    var components = URLComponents(string: "https://www.googleapis.com/books/v1/volumes")
    components?.queryItems = [URLQueryItem(name: "q", value: "{" + identifier + "}")]
    guard let url = components?.url else { throw URLError(.badURL) }

    let (data, _) = try await URLSession.shared.data(from: url)
    return try JSONDecoder().decode(GoogleBook.self, from: data)
}

robertmryan

let recognizer = SFSpeechRecognizer()
weak var task: SFSpeechRecognitionTask?  // note weak reference, as the recognition task keeps strong reference for us while the task is underway

deinit {
    task?.cancel()                       // if still running by the time we deallocate, stop it
}

func startRecognition(of fileURL: URL) {
    task?.cancel()                       // if prior task running, stop it

robertmryan

//
//  CGPoint+Centroid.swift
//
//  Created by Robert Ryan on 5/19/20.
//  Copyright © 2020 Robert Ryan. All rights reserved.
//
//  See https://stackoverflow.com/a/61884774/1271826

import Foundation

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struct Images {
    static func minus(pointSize: CGFloat? = nil) -> UIImage? {
        image(named: "minus", pointSize: pointSize)
    }

    static func trash(pointSize: CGFloat? = nil) -> UIImage? {
        image(named: "trash", pointSize: pointSize)
    }

    private static func image(named name: String, pointSize: CGFloat? = nil) -> UIImage? {

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func generateMap(with coordinates: [CLLocationCoordinate2D]) {
    var annotationViews = [MKMarkerAnnotationView]()
    let startCoord = coordinates.first!
    let endCoord = coordinates.last!

    annotationViews.append(createMapMarkerAnnotation(text: "A", coordinates: startCoord, color: .green))
    annotationViews.append(createMapMarkerAnnotation(text: "B", coordinates: endCoord, color: .green))

    let snapshotter = MKMapSnapshotter(options: options)
    snapshotter.start { snapshot, error in

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- (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];