almaleh

DispatchQueue.global().async {
    print("Generic global queue")
}

almaleh

DispatchQueue.global(qos: .userInteractive).async {
    print("We're on a global concurrent queue!") 
}

almaleh

URLSession.shared.dataTask(with: url) { data, response, error in
    if let data = data {
        DispatchQueue.main.async { // UI work
            self.label.text = String(data: data, encoding: .utf8)
        }
    }
}

almaleh

class ViewController: UIViewController {
    let concurrent = DispatchQueue(label: "com.besher.concurrent", attributes: .concurrent)
    let isolation = DispatchQueue(label: "com.besher.isolation", attributes: .concurrent)
    private var _array = [1,2,3,4,5]
    
    var threadSafeArray: [Int] {
        get {
            return isolation.sync {
                _array
            }

almaleh

class ViewController: UIViewController {
    
    let concurrent = DispatchQueue(label: "com.besher.concurrent", attributes: .concurrent)
    var array = [1,2,3,4,5]

    override func viewDidLoad() {
        for _ in 0...1 {
            race()
        }
    }

almaleh

// add this after the last async statement, 
// still inside starterQueue.async
backgroundQueue.sync {}

almaleh

enum Color: String {
    case blue = "🔵"
    case white = "⚪️"
}

func output(color: Color, times: Int) {
    for _ in 1...times {
        print(color.rawValue)
    }
}

almaleh

func processImage(data: Data) -> UIImage? {
    guard let image = UIImage(data: data) else { return nil }
    // calling an expensive function
    let processedImage = upscaleAndFilter(image: image)
    return processedImage 
}

almaleh

    ACTION = build
    AD_HOC_CODE_SIGNING_ALLOWED = NO
    ALTERNATE_GROUP = staff
    ALTERNATE_MODE = u+w,go-w,a+rX
    ALTERNATE_OWNER = grantdavis
    ALWAYS_SEARCH_USER_PATHS = NO
    ALWAYS_USE_SEPARATE_HEADERMAPS = YES
    APPLE_INTERNAL_DEVELOPER_DIR = /AppleInternal/Developer
    APPLE_INTERNAL_DIR = /AppleInternal
    APPLE_INTERNAL_DOCUMENTATION_DIR = /AppleInternal/Documentation

almaleh

func setupAnimator() {

    let context = (view: self.view,
                   navigationItem: self.navigationItem,
                   parent: self.parent
                   )

    let anim = UIViewPropertyAnimator(duration: 2.0, curve: .linear) {
        context.view?.backgroundColor = .red
        context.navigationItem.rightBarButtonItems?.removeAll()