Grand Central Dispatch (GCD) provides a simple and robust mechanism for concurrent and asynchronous operations, primarily in Apple operating systems (e.g., iOS, macOS, watchOS, and tvOS), but also FreeBSD and MidnightBSD.
What's the best way of multithreading in iOS as we have three options GCD, NSThread, and NSOperationQueue? I am confused …
ios multithreading grand-central-dispatch nsthread nsoperationqueueI read Apple documentation on how to Use serial queues to ensure that tasks to execute in a predictable order …
ios objective-c-blocks grand-central-dispatchI've used both GCD and performSelectorOnMainThread:waitUntilDone in my apps, and tend to think of them as interchangeable--that is, performSelectorOnMainThread:…
iphone objective-c multithreading ios grand-central-dispatchI am currently playing around with Grand Central Dispatch and discovered a class called DispatchWorkItem. The documentation seems a little …
swift grand-central-dispatch cancellation dispatchworkitemI want to download some files, for example 100 files, at the same time. So I decided to add my download …
ios multithreading swift grand-central-dispatchWhen you need to perform something on the main thread in the completion block of a networking task or an …
ios swift grand-central-dispatch nsoperationqueue ui-threadI'm trying these two approaches: dispatch_async(dispatch_get_main_queue(),^{ [self handleClickAsync]; }); and [self performSelector:@selector(handleClickAsync) withObject:nil …
objective-c ios asynchronous grand-central-dispatchI'm using Grand Central Dispatch (GCD) in my application to do some heavy lifting. The application is using Core-Data for …
iphone core-data objective-c-blocks grand-central-dispatchI was wondering why when you create a repeating timer in a GCD block it doesen't work? This works fine: …
ios objective-c grand-central-dispatch nstimer nsrunloopI would assume that I am aware of how to work with DispatchGroup, for understanding the issue, I've tried: class …
ios swift grand-central-dispatch semaphore