SysCall97

import Foundation

// Create a custom concurrent queue
let concurrentQueue = DispatchQueue(label: "com.example.concurrentQueue", attributes:.concurrent)

var sharedArray: [Int] = []


let numberOfThreadsAllowedToAccessSharedReource: Int = 1
// Semaphore to control access the shared resource

SysCall97

import Foundation

// Create a custom concurrent queue
let concurrentQueue = DispatchQueue(label: "com.example.concurrentQueue", attributes:.concurrent)

var sharedArray: [Int] = []

// Function to write to the shared array in a thread-safe manner using barrier
func writeToArray(element: Int) {
    concurrentQueue.async(flags: .barrier) {

SysCall97

import Foundation

class Search {
    private var suggestedCitiesWorkItem: DispatchWorkItem?
    
    func getSuggestedCities(for prefix: String) {
        // here cancelling the previous workitem before assigning the new one
        suggestedCitiesWorkItem?.cancel()
        
        let workItem: DispatchWorkItem = DispatchWorkItem {

SysCall97

import UIKit

class SplashViewController: UIViewController {
    var launchDataDispatchGroup: DispatchGroup = DispatchGroup()
    override func viewDidLoad() {
        super.viewDidLoad()
        
        DispatchQueue.global().async { [weak self] in
            self?.getAppLaunchData()
        }

SysCall97

import UIKit

class SplashViewController: UIViewController {
    var launchDataDispatchGroup: DispatchGroup = DispatchGroup()
    override func viewDidLoad() {
        super.viewDidLoad()
        
        DispatchQueue.global().async { [weak self] in
            self?.getAppLaunchData()
        }

SysCall97

import Foundation

// Perform loop 1 to 10 on global concurrent queue with 'userInteractive' QoS
DispatchQueue.global(qos: .userInteractive).async {
    for i in 1...10 {
        print("Queue 1: \(i)")
    }
}

// Perform loop 11 to 20 on global concurrent queue with 'userInitiated' QoS

SysCall97

import UIKit

extension UILabel {
    func updateLabel(with newText: String) {
        DispatchQueue.main.async {
            // Update the text of the label on the main thread
            self.text = newText
        }
    }
}

SysCall97

const Parent = () => {
  const [count, setCount] = useState<number>(0);
  
  const printFunction = useCallback((text: string) => {
    console.log(text);
  }, []);

  // some other functions
      
  return (

SysCall97

type props = {
    callback: (a: string) => void;
}

const Child: React.FC<props> = ({callback}) => {
    const [value, setVlaue] = useState<number>(0);

    const isEven = () => {
        let i = 0;
        // this while loop is to mock a costly operation

SysCall97

const Parent = () => {
  const [count, setCount] = useState<number>(0);
  
  const printFunction = (text: string) => {
    console.log(text);
  }

  // some other functions
      
  return (