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' Before Mac OS X, the Mac OS used ‘forked' files, which have two components: a data fork and a resource fork. The Mac OS Standard (HFS) and Mac OS Extended (HFS Plus) disk formats support forked files. When you move these types of files to other disk formats, the resource fork can be lost.
My Core Data document-based application crashes on 'save as'. The problem seems similar to the one described in the cocoa-dev thread titled 'NSPersistentDocument objects 'gutted' after. Further Reading: To learn more about Core Data, read Core Data Programming Guide. The tutorials NSPersistentDocument Core Data Tutorial and Core Data Utility Tutorial step you through the basic procedure for creating document-based and non–document-based Core Data applications. Core Data is a really fun and interesting framework to use and we hope that our tutorial on saving and fetching data helps you when building your own apps. Author's Bio Ryan Hartman is a senior iOS developer with over 7 years of experience creating awesome apps for iOS and Mac.
Paul Hudson@twostraws
This technique project is going to explore Core Data in more detail, starting with a summary of some basic techniques then building up to tackling some more complex problems.
When you're working with Core Data, please try to keep in mind that it has been around for a long time – it was designed way before Swift existed, never mind SwiftUI, so occasionally you'll meet parts that don't work quite as well in Swift as we might hope. Hopefully we'll see this improve over the years ahead, but in the meantime be patient!
We have lots of Core Data to explore, so please create a fresh project where we can try it out. Call it 'CoreDataProject' and not just 'CoreData' because that will cause Xcode to get confused. Make sure you check the 'Use Core Data' box so that Xcode sets up a data model and managed object context for us.
Chip resetter canon. Be warned: Xcode really likes to ignore changes made in the Core Data editor, so I like to drive the point home by pressing Cmd+S before going to another file. Failing that, restart Xcode!
All set? Let's go!
Tip: Sometimes you'll see a heading titled 'Want to go further?' This contains some bonus examples that help take your knowledge further, but you don't need to follow here unless you want to – think of it as extra credit.
Nspersistentdocument Core Data Tutorial For Mac Windows 10
Nspersistentdocument Core Data Tutorial For Mac Os
This technique project is going to explore Core Data in more detail, starting with a summary of some basic techniques then building up to tackling some more complex problems.
When you're working with Core Data, please try to keep in mind that it has been around for a long time – it was designed way before Swift existed, never mind SwiftUI, so occasionally you'll meet parts that don't work quite as well in Swift as we might hope. Hopefully we'll see this improve over the years ahead, but in the meantime be patient!
We have lots of Core Data to explore, so please create a fresh project where we can try it out. Call it 'CoreDataProject' and not just 'CoreData' because that will cause Xcode to get confused. Make sure you check the 'Use Core Data' box so that Xcode sets up a data model and managed object context for us.
Chip resetter canon. Be warned: Xcode really likes to ignore changes made in the Core Data editor, so I like to drive the point home by pressing Cmd+S before going to another file. Failing that, restart Xcode!
All set? Let's go!
Tip: Sometimes you'll see a heading titled 'Want to go further?' This contains some bonus examples that help take your knowledge further, but you don't need to follow here unless you want to – think of it as extra credit.
Nspersistentdocument Core Data Tutorial For Mac Windows 10
Nspersistentdocument Core Data Tutorial For Mac Os
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