How to make one task(insert) wait for another to task(remove) in Objective C?

I have declared an NSMutableArray and the count should not exceed 100. If some one calls addObject method to add an item to that array when the count is 100 then that method call should not be executed until someone removes an item so that count will go down below 100. Can we use semaphore or group dispatch for signaling or mutex/NSLock is recommended.

I know that using using JSONDecoder we can convert the downloaded JSON data into class/struct object. Is there a way to do the same for raw data(NSData)/octect. Since downloaded is not a json, I am getting error. I have class like this public struct FileData: Codable{ public var data: Data? public init (data: Data? = nil){ self.data = data } } Is there a way to assign the downloaded data to FileData().data via decoding

class  a {     b().download ({ data in     }) } class  b{     func download (downloadedData: @escaping (_ data: Data? ) -> Void )  {         c().download()     } } class c {     func download () -> Data {         let semaphore = DispatchSemaphore(value: 0)           NetworkManager().downloadRequest: { (result: Result<Data, Error>) in                                             switch result {                                             case .success(let success)                                                 ......                                              case .failure(let error): .....                                             }                                             semaphore.signal()                                    }                         )         semaphore.wait()         return data     } } Class a initiates the download and class c interacts with network manager to download the data. Class c issues semaphore wait as soon as it sends request to download the data and issues signal when download completes. Is there a way to issue signal from class a when download is in progress. Basically class a should be able to skip wait by issuing signal command

I believe weak references are not required when using self inside the dispatch queues. Is there any other occasions where weak self is not required related to closure?

Is there any tutorial to learn Swift by comparing Objective-C. Tutorial should contain both Objective-C and Swift code.

I am trying to localize Swift framework and added a file Localizable.Strings and that file is included in the target but the app that consumes this framework is showing the key not the actual string. NSLocalizedString("string_key", comment: "Actual String") I think issue is related to bundle. Do I need to add bundle parameter to NSLocalizedString? If so what is the bundle parameter value? If bundle is not required then what must be the issue

I wanted to move a few .swift files from the framework to different container. I tried creating framework/static-library/SPM to move a few files from the framework but getting compilation errors for the new framework and old framework due to dependancy. I don't want ondemand resource and wanted to keep it local. So I looking for some container to move a few files from framework and load/import them back. I tried moving those files to Settings.bundle but unable to load/import them in the framework? Is there any other way to achieve this?

Is there a way to identify whether UIView hides/overlaps another UIView by checking points/pixels?

I need to get content-length from response header but it seems that content-length header is missing due to chunked Transfer Encoding. Is there anyway to get the content-length for Transfer-Encoding type

I have the business logic in Swift class and built UI using SwiftUI. Below the high level code that shows how SwiftUI and its subview receives the data from Swift. Please let me know if its correct approach class SwiftClass{     var score = "1"     func A () {}          func B () {         // score will get updated frequently         let scoreModal =  ScoreUIViewModel()         let scoreUI: ScoreUI = ScoreUI(showModal: .constant(true), scoreUIViewModel: scoreModal)         DispatchQueue.main.async {             scoreUI.displayScoreUI()         }        // score getting updated from another class         scoreModal.score = score // score getting updated from another class         score  = "2"         scoreModal.score = "2" // score getting updated from another class         score  = "3"         scoreModal.score = "3" // score getting updated from another class        score  = "4"         scoreModal.score = "4"      .......              } } import SwiftUI class ScoreUIViewModel: Observable {     @Published score: String } struct ScoreUI: View {     @State var scoreUIViewModel: ScoreUIViewModel     func displayScoreUI() {         let hostController = UIHostingController(rootView: ScoreUI())         hostController = .overCurrentContext         topViewController()!.present(hostController, animated: true, completion: nil)     }.environmentObject(scoreUIViewModel)      } struct ScoreText: View {     @EnvironmentObject var scoreUIViewModel: ScoreUIViewModel     Text(score).foregroundColor(.green) }

Hi,I have an Xcode project with multiple targets. I added a few custom frameworks to all the targets which increase the IPA file size. Actually, a few targets don't need to have these custom framework.I know we can exclude these frameworks by removing them from "Build Phases->Link Binaries With Libraries" for the particular target, but I am exploring to see whether these can be achieved by having a script so that we don't have to remove/add them manually whenever required.I have a custom plist file for each target which tells whether these frameworks are needed. Is there any command available to remove/strip the framework from the target while building the app so that I can write a script by referring the plist value.

I wanted to present an View with modal animation full screen on top the the existing view/viewcontroller programmatically(without button tap or tap gesture). Is it possible to present a view without button tap/tap gesture?

I developed a framework in Swift and designed a screen/view via SwiftUI. SwiftUI view will be presented on top of the Window by the class written in Swift. Now I need to pass the data from the Swift class to SwiftUI. Could one any help to know the best practice to pass the data to show the progress from Swift class to Swift UI. func A () {} func B () { // score will get updated frequently score = .... ScorePresenter().presentScoreUI() } } import SwiftUI struct ScorePresenter: { func presentScoreUI() { let hostController = UIHostingController(rootView: ScoreUI()) hostController = .overCurrentContext topViewController()!.present(hostController, animated: true, completion: nil) } } struct ScoreUI: View { var score = 1 Text(score).foregroundColor(.green) } When ever score changes in Score class ScoreUI must be updated accordingly.

What is the best way to print in the order for the given implementation (void) print:(NSString*) str while(true) { NSLog(@“%@”, str); } } [self print:@“123”]; [self print:@“ABC”]; [self print:@“456”]; [self print:@“DEF”]; output should be printing in the order continuously 123 ABC 456 DEF 123 ABC 456 DEF … … …