WebNov 26, 2012 · To start, let’s look at how -mutableCopy is supposed to work in a class cluster: Swift Objective-C let immutable = NSSet() let mutable = immutable.mutableCopy() as! NSMutableSet mutable.isKindOfClass(NSSet.self) // true mutable.isKindOfClass(NSMutableSet.self) // true Now let’s suppose that NSOrderedSet … WebMar 7, 2024 · One way to make money on stocks for which the price is falling is called short selling (also known as “going short” or “shorting”). Short selling sounds like a fairly simple concept in...
Nonmutable Definition & Meaning YourDictionary
WebThe NSSet, NSMutableSet, and NSCountedSet classes declare the programmatic interface to an unordered collection of objects. NSSet declares the programmatic interface for static sets of distinct objects. You establish a static set’s entries when it’s created, and can’t modify the entries after that. WebFeb 11, 2013 · NSURLCache provides a composite in-memory and on-disk caching mechanism for URL requests to your application. As part of Foundation’s URL Loading System, any request loaded through NSURLConnection will be handled by NSURLCache.. Network caching reduces the number of requests that need to be made to the server, and … phineas and ferb mandace
NSMutableArray by example - Eezy Tutorials iOS
WebNSData creates static data objects, and NSMutable Data creates dynamic data objects. You can easily convert one type of data object to the other with the initializer that takes an NSData object or an NSMutable Data object as an argument. The following NSData … Discussion. The mutable data object’s length parameter is read-writeable. You … WebJul 15, 2013 · NSCompoundPredicate( type: .and, subpredicates: [ NSPredicate(format: "age > 25"), NSPredicate(format: "firstName = %@", "Quentin") ] ) NSPredicate(format: " (age > 25) AND (firstName = %@)", "Quentin") While the syntax string literal is certainly easier to type, there are occasions where you may need to combine existing predicates. WebJan 7, 2013 · You can think of NSNull as effectively boxing the NULL or nil value so that it can be used in collections: NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionary]; mutableDictionary[@"someKey"] = [NSNull null]; NSLog(@"%@", [mutableDictionary allKeys]); // @ [@"someKey"] phineas and ferb mandy