I have not found any official documentation that Xcode's formatting is supporting Doxygen comments. In the past Xcode's formatting seems to have worked but with Xcode 11 comment formatting (highlighting) is broken at several places. Therefore, does Xcode support Doxygen comments?

In the WWDC video was shown that a GeLU function can be easily implemented using MPSGraph. Can this function also be used for training? And if, how?

Where can if find any documentation about MPSGraph besides the WWDC sample code?

Consider the following code #include <chrono> #include <iostream> #include <random> #include <vector> class TestClass { public:   int A = 0;   int B = 4; protected: private: }; int main(int argc, const char * argv[]) {   std::random_device randomDevice;   std::mt19937 mersenneTwister(randomDevice());   std::uniform_int_distribution<size_t> distribution(1,255);   for (size_t i=0; i<10000000; ++i)   {     size_t const vectorSize = distribution(mersenneTwister)+1;     TestClass* testVector(reinterpret_cast<TestClass*>(malloc(vectorSize*sizeof(TestClass))));     if (testVector[0].A == 0x0ffeefed)     {       std::cout << "Sorry value hit." << std::endl;       break;     } /* if */     free(testVector);   } /* for */   return 0; } Clang completely removes the for-loop with optimisation -O3. I am a bit surprised. Although testVector will contain only garbage, I expected the loop not to be removed (actually also no warning was issued, only the analyser detected that testVector contains garbage). If I add a line assigning a value to a random element of testVector, the loop is not removed. PS: I wanted to use the loop for testing the execution speed of malloc and free.

Assume I have got a WKInterfaceGroup object. The group object is used to determine the position of a child object. In case I have as a child a label or an image. Is it possible to let the label or image draw beyond the bounds of the group object?

Hi, is there any way to activate the include header path autocomplete functionality again in Xcode 13 using C++ or has this feature been abandoned? Regards, Hartwig

In iOS 11.0+ I use the following statements to add a UISearchController to the navigation bar:[[self navigationItem] setSearchController:[self myUISearchController]]; [[self navigationItem] setHidesSearchBarWhenScrolling:NO]; [self setDefinesPresentationContext:YES];To hide the UISearchController I tried the following:[[self myUISearchController] setActive:NO]; [[self myUISearchController] removeFromParentViewController]; // just a try [[self navigationItem] setSearchController:nil]; // this should be sufficient [self myUISearchController:nil];Actually, the search controller disappears but leaves a black rectangle at the position where it was. It seems to be that the UITableViewController inside the UINavigationController does not re-align its table view and therefore leaves a black rectangle.Any ideas?

I am intializing a UIDocumentPickerViewController with the UTIs public.text and public.text-plain. UIDocumentPickerViewController* documentPickerController = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:[NSArray arrayWithObjects:@"public.text",@"public.text-plain",nil] inMode:UIDocumentPickerModeImport];When selecting a text file I get the error message "Failed to associate thumbnails for picked URL file:///private/var/mobile/Library/Mobile%20Documents/com~apple~CloudDocs/NIC.txt with the Inbox copy file:///private/var/mobile/Containers/Data/Application/B857A5E7-74FE-4479-B899-B61D524B7E0D/tmp/xxx-Inbox/NIC.txt: Error Domain=QLThumbnailErrorDomain Code=102 "(null)" UserInfo={NSUnderlyingError=0x28250df20 {Error Domain=GSLibraryErrorDomain Code=3 "Generation not found" UserInfo={NSDescription=Generation not found}}}".What can I do to get rid of this error message?

Is there any possibility to tell Xcode to include header files with a .hpp suffix in the autocompletion for include paths?

The examples in LearnMetalCpp do in the renderer's draw method something like this: select a frame for the instance buffer create a new command buffer call dispatch_semaphore_wait to make sure that the selected instance buffer is not used by Metal put dispatch_semaphore_signal into the command buffer's completed handler modify the instance buffer and some other Metal related variables commit the command buffer Depending on the number of frames used and the complexity of the scene there can be a couple of frames in the command queue. Suppose the window (and its related view) is closed while Metal is still busy with items in the command queue. This means that the semaphore is still in use. How is it guaranteed that the semaphore is destroyed after the view is closed? Or is it guaranteed that the view's destructor is only called after the command queue has finished all its work?

How can I copy a SIMD float4x4 matrix to a vertex shader by using the setVertexBytes:length:atIndex message of a render command encoder?

Since Xcode 16 sorting source code files in the navigator with ascending order by name results in: A.hpp A.cpp B.hpp B.cpp ... Previous versions of Xcode sorted the files correctly (with respect to ascending order): A.cpp A.hpp B.cpp B.hpp Is this a bug or is there any parameter I have to set to get the old ordering back?