Filtering Searches With NSPredicate L5.4.2
NSPredicate This is a class from back in the Objective-C days when block which are Objective-C's version of closures were not available. But NSPredicate still has »
Displaying Core Data Objects L5.4.1
Displaying data from Core Data is a lot like implementing a table view with a fix set of simple objects. The key difference is that a »
Core Data L5.3.1
Core data is the framework to help manage the model aspect of an application. Core Data gives us a way to manage the important tangible and »
The Sandbox L5.2.1
When an app is installed iOS creates a sandbox of several pre made containers which only that app can access. It's composition looks like the following. »
Backgrounding Lengthy Tasks L4.10.1
Synchronous Task Example @IBAction func synchronousDownload(_ sender: UIBarButtonItem) { // Get the URL for the image let url = URL(string: BigImages.seaLion.rawValue) // Obtain the NSData with the »