For me the code is in the app. (lldb) po rv error: expression failed to parse: error: <EXPR>:3:1: error: cannot find 'rv' in scope rv ^~ (lldb) fr v rv (WhatSize.SideBarItemReducer.State) rv = <variable not available> // the code I'm trying to debug let rv = SideBarItemReducer.State.init(item: item) .preserveUIState(sideBarItemState) return rv What's not so funny is that rv has the proper data in the Variables View, but I love command line short cuts. Not a show stopper but a huge annoyance. Xcode 14.3.1 (14E300c) Thanks.

You can write a custom NSViewRepresentable to reach down to AppKit You can search for an SPM git package called introspect

We want to change the bundle id, say the user has V7 of the app and we are installing V8. And it makes sense to install it in the same exact location. Unfortunately attempting to remove existing /Application/App during the 'preinstall' does not help.

This is a macOS issue, ie: NSView.BackgroundStyle We have no way of telling inside a SwiftUI view that we are just highlighted. The user can highlight/un-highlight a bunch of rows during a mouse down, mouse drag sequence, but they are not selected yet until you release the mouse. A very cool AppKit feature. Maybe @Eskimo can Shed some deep insights on how this migrates to SwiftUI.

This is a macOS related thing. I have chased this forever in vain. This is akin to NSCell.isHighlighted or NSCell.backgroundStyle I for sure want to use some special colors when not in highlight mode. A cell will be first highlighted in mouse down and than eventually selected on mouse up. So apple has to provide an API or an environment value to indicate to our row view that is highlighted or not. Maybe @eskimo can look up the source for this and shed some deep insight.

I had the same vexing problem and remembered that often this is due to macOS caching. Since for example it will work for new projects. Removed all Xcode caches ~/Library/Developer/Xcode/DerivedData/ Rebooted, I also suspect a log out/log in will do. Rebuild and profiled my app and the source is there, tada.

This is a known bug and has been fixed on Xcode 14, beta 5 and macOS 13. If you need this feature on older systems, such as macOS 11 + you will need to go back and use a MainMenu.xib and an AppDelegate struct SwiftUIView: View {     var body: some View {         Text("Hello, SwiftUI!")             .frame(maxWidth: .infinity, maxHeight: .infinity)     } } @main class AppDelegate: NSObject, NSApplicationDelegate {     @IBOutlet var window: NSWindow!     func applicationDidFinishLaunching(_ aNotification: Notification) {         // Insert code here to initialize your application         window = NSWindow(             contentRect: NSRect(x: 0, y: 0, width: 480, height: 270),             styleMask: [.miniaturizable, .closable, .resizable, .titled],             backing: .buffered, defer: false)         window.center()         window.title = "No Storyboard Window"         window.contentView = NSHostingView(rootView: SwiftUIView())         window.makeKeyAndOrderFront(nil)     }     func applicationWillTerminate(_ aNotification: Notification) {         // Insert code here to tear down your application     }     func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {         return true     } }

Small world. I have been banging my head for hours on this. I have a real SwiftUI app, with one Window. When this Window (mainWindow/keyWindow) is minimized an icon is added on the dock. Now if i click on the app icon, i expect this minimized window to expand again. But it does not. If i switch to another app and than click on the app icon on the doc, the minimized window is expanded as expected. It appears the app thinks it is still active applicationDidResignActive: is not called. @eskimo What magic is going on pls ?

These are special links, indeed, I knew a few under /Volume/ were mounts, but forgot that some others are also links such as /Applications [macos-bigsur]/usr/local> ls -ail /         12886009979 drwxrwxr-x   7 root  admin   224 Feb  4 11:00 Applications/ [macos-bigsur]/usr/local> ls -ail /System/Volumes/Data/         12886009979 drwxrwxr-x    7 root  admin    224 Feb  4 11:00 Applications/ /Applications to /System/Volumes/Data/Applications My problem comes from inconsistent results of stat() vs getattrlistbulk() Now if I could just figure that out :-)

After spending a few more hours debuging this, it is possible I have a bad pointer arithmetic somewhere. However this code fails on about a dozen paths in my giant file system. (more than 4m inodes)

- (IDDNode*)_fetchChild:(char**)entry_start :(NSString*)parentPath :(uint64)pnode { IDDNodeAttribute attribute; char* field = *entry_start; attribute.length = *(uint32_t *)field; field += sizeof(uint32_t); *entry_start += attribute.length; attribute.returned = *(attribute_set_t *)field; field += sizeof(attribute_set_t); if (attribute.returned.commonattr & ATTR_CMN_NAME) { attribute.name = field; attribute.name_info = *(attrreference_t *)field; field += sizeof(attrreference_t); // DEBUG NSString* childPath = [parentPath stringByAppendingPathComponent:[NSString stringWithUTF8String:(attribute.name + attribute.name_info.attr_dataoffset)]]; _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@'", childPath]); } if (attribute.returned.commonattr & ATTR_CMN_FSID) { attribute.fsid = *(fsid_t *)field; field += sizeof(fsid_t); int32_t fileSystemID = (int32_t)attribute.fsid.val[0]; // DEBUG NSString* childPath = [parentPath stringByAppendingPathComponent:[NSString stringWithUTF8String:(attribute.name + attribute.name_info.attr_dataoffset)]]; _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' fileSystemID: '%d'", childPath, fileSystemID]); } if (attribute.returned.commonattr & ATTR_CMN_OBJTYPE) { attribute.obj_type = *(fsobj_type_t *)field; field += sizeof(fsobj_type_t); // DEBUG NSString* childPath = [parentPath stringByAppendingPathComponent:[NSString stringWithUTF8String:(attribute.name + attribute.name_info.attr_dataoffset)]]; _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' type: '%@'", childPath, [self _fileType:attribute.obj_type]]); } if (attribute.returned.commonattr & ATTR_CMN_MODTIME) { struct timespec time = *(struct timespec*)field; field += sizeof(struct timespec); NSDate* modificationDate = [NSDate dateWithTimeIntervalSince1970:time.tv_sec]; // DEBUG NSString* childPath = [parentPath stringByAppendingPathComponent:[NSString stringWithUTF8String:(attribute.name + attribute.name_info.attr_dataoffset)]]; _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' modificationDate: '%@'", childPath, modificationDate]); } if (attribute.returned.commonattr & ATTR_CMN_FILEID) { attribute.inode = *(uint64_t *)field; // DEDA DEBUG struct stat file_status; NSString* childPath = [parentPath stringByAppendingPathComponent:[NSString stringWithUTF8String:(attribute.name + attribute.name_info.attr_dataoffset)]]; _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' inode: '%lld'", childPath, attribute.inode]); if (lstat((const char *)[childPath fileSystemRepresentation], &file_status) == 0) { int64_t inode2 = file_status.st_ino; if (attribute.inode != inode2) { _logError(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' inode mismatch: '%lld'", childPath, inode2]); } else { _logInfo(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"filePath: '%@' inode match: '%lld'", childPath, inode2]); } } field += sizeof(uint64_t); } return nil; }

typedef struct IDDNodeAttribute { uint32_t length; // ATTR_BIT_MAP_COUNT attribute_set_t returned; // ATTR_CMN_RETURNED_ATTRS char *name; attrreference_t name_info; // ATTR_CMN_NAME fsid_t fsid; // ATTR_CMN_FSID fsobj_type_t obj_type; // ATTR_CMN_OBJTYPE struct timespec modtime; // ATTR_CMN_MODTIME uint64_t inode; // ATTR_CMN_FILEID struct { u_int32_t link_count; // ATTR_FILE_LINKCOUNT off_t alloc_size; // ATTR_FILE_ALLOCSIZE off_t total_size; // ATTR_FILE_TOTALSIZE }; } __attribute__((aligned(4), packed)) IDDNodeAttribute; // buffer to place our results const int IDDNodeAttributeBufferSize = 32 * sizeof(IDDNodeAttribute); struct attrlist attrList = { .bitmapcount = ATTR_BIT_MAP_COUNT, .commonattr = ATTR_CMN_RETURNED_ATTRS | ATTR_CMN_NAME | ATTR_CMN_FSID | ATTR_CMN_OBJTYPE | ATTR_CMN_MODTIME | ATTR_CMN_FILEID, .dirattr = ATTR_DIR_ENTRYCOUNT, .fileattr = ATTR_FILE_LINKCOUNT | ATTR_FILE_ALLOCSIZE | ATTR_FILE_TOTALSIZE }; int itemCount = getattrlistbulk(dirfd, &attrList, attrBuf, IDDNodeAttributeBufferSize, 1); if (itemCount == -1) { _logError(NSStringFromSelector(_cmd), [NSString stringWithFormat:@"error: '%ld = %s' path: '%s'", (long)errno, strerror(errno), path]); break; } else if (itemCount == 0) { break; } else { char* entry_start = attrBuf; for (int index = 0; index < itemCount; index++) { IDDNode* child = [self _fetchChild:&entry_start :filePath :pnode]; if (child) { [rv addObject:child]; } } }

Interesting ... Here are some examples inode mismatch: '/Applications ' ' 1152921500311879699' vs ' 78133671' inode mismatch: '/Library ' ' 1152921500311879700' vs ' 78110879' inode mismatch: '/System/Library/Assets ' ' 1152921500312008804' vs ' 78132729' inode mismatch: '/System/Library/AssetsV2 ' ' 1152921500312008805' vs ' 78131512' inode mismatch: '/System/Library/Caches ' ' 1152921500312115767' vs ' 78132730' inode mismatch: '/System/Library/Speech ' ' 1152921500312658038' vs ' 78131497' inode mismatch: '/System/Volumes/Data ' ' 1152921500312709177' vs ' 1152921500311879682' inode mismatch: '/System/Volumes/Preboot ' ' 1152921500312709197' vs ' 2' inode mismatch: '/System/Volumes/Update ' ' 1152921500312709199' vs ' 2' inode mismatch: '/System/Volumes/VM ' ' 1152921500312709200' vs ' 2' inode mismatch: '/Users ' ' 1152921500312764772' vs ' 319' inode mismatch: '/Volumes ' ' 1152921500312764773' vs ' 320' inode mismatch: '/Volumes/970Raid ' ' 78720565' vs ' 2' inode mismatch: '/Volumes/Macintosh HD ' ' 78716885' vs ' 2' inode mismatch: '/Volumes/Macintosh HD - Data ' ' 78716879' vs ' 2' inode mismatch: '/Volumes/TimeMachine ' ' 78716884' vs ' 2' inode mismatch: '/Volumes/Vault ' ' 78716876' vs ' 2' inode mismatch: '/cores ' ' 1152921500312764847' vs ' 321' inode mismatch: '/dev ' ' 1152921500312764848' vs ' 388' inode mismatch: '/opt ' ' 1152921500312764850' vs ' 324' inode mismatch: '/private ' ' 1152921500312764851' vs ' 78132742' inode mismatch: '/usr/libexec/cups ' ' 1152921500312768002' vs ' 78110424' inode mismatch: '/usr/local ' ' 1152921500312773577' vs ' 78110530' inode mismatch: '/usr/share/snmp ' ' 1152921500312787193' vs ' 78110532' /Volumes/$* are mounts. The left column is the 'inode' from getattrlistbulk The right is the 'inode' as I fetch using lstat

Really ? Why did apple make this so hard. I remember there used to be a menu on Xcode to switch this feature on and off. I guess we need to use 3rd party markdown editors.

This magic is frustrating when it does not work. I have a SwiftUI view (PhysicalSize) wrapped in NSHostingView that is placed inside a NSTableCellView. I have set a custom NSTableRowView on the NSTableView and AppKit is setting the proper isEmphasized status when the row is selected. Good. Then I'm setting the backgroundStyle of the cells to .emphasized Good. However the swift UI is absolutely unaware, that we are being drawn in highlighted mode and the Text color does invert. Not good. Can some apple genius chime in here. struct PhysicalSize: View {     var file: File     var body: some View {         HStack {             Spacer()             Text(file.physicalSize.compactFormatted)                 .font(.subheadline)         }     } }