function with dataTask returning a value

Question

I wan\'t to check if my url statusCode equals to 200, I created a function returning a Boolean if the statusCode equals to 200, I\'m using a dataTask, but I don\'t know how

Answer 1

Consider semaphore if you want to keep your original return pattern.

func checkUrl(urlString: String) -> Bool {
    if let url = URL(string: fileUrl) {
        var result: Bool!

        let semaphore = DispatchSemaphore(value: 0)  //1. create a counting semaphore

        let session = URLSession.shared
        session.dataTask(with: url, completionHandler: { (data, response, error) in
            result = true  //or false in case
            semaphore.signal()  //3. count it up
        }).resume()

        semaphore.wait()  //2. wait for finished counting

        return result
    }

    return false
}