NSTimerDelegate interface is the delegate responsible for handling events received from NSTimer.
NSURLConnectionDataDelegate interface is the delegate responsible for handling events related to data of NSURLConnection objects.
NSURLConnectionDelegate interface is the delegate responsible for handling success or failure of connections.
NSXMLParserDelegate interface is the delegate responsible to collaborate with NSXMLParser objects.
CFNumberFormatterStyle class defines different formatting styles for numbers.
CFType is an abstract class that is the base of some core foundation classes.
Foundation class provides a set of useful methods for retrieving directory search paths,current user's temporary directory and home directory path.
NSBundle class defines an object that represents the code and the resources of the application.
NSCalendar class defines defines an object that represents the calendar of the application.
NSCalendarOptions class defines different types of arithmetic operations related to calendars.
NSCalendarUnit class defines calendar units such as months,days etc.
NSData class defines a data object that is created using data from a buffer or from files.
NSDataBase64DecodingOptions class defines decoding options used for NSData objects that are Base-64 encoded.
NSDataBase64EncodingOptions class defines encoding options used for encoding NSData objects with Base-64.
NSDate class defines an object that represents the date as a instance of time.
NSDateComponents class defines an object that represents a date or an interval as a composition of a variety of distinct elements.
NSDictionary class defines an object that represents a dictionary that maps immutable keys to maps.
NSError class incorporates all the information related to errors.
The error domains.
Different types of error codes.
Keys of the user info dictionary.
NSFileHandle class defines an object that is used in order to handle file descriptors.
NSFileManager class defines an object that is responsible for processing operations related to the file system such as locating creating,copying and moving files.
NSHTTPCookie class defines an object that represents an HTTP cookie.
NSHTTPCookieAcceptPolicy class defines different types of cookie accept policies.
NSHTTPCookieStorage class defines a singleton object that is responsible for the NSHTTPCookies' storage.
NSHTTPURLResponse class defines an object that represents the responses from HTTP requests.
NSIndexPath class defines an object that represents the path that leads to a node of a tree, for example a path of particular row of a UITableView.
NSJSONReadingOptions class defines different options to use when Foundation instances are created from JSON data.
NSJSONSerialization class defines methods for conversions between JSON data and Foundation objects.
NSJSONWritingOptions class defines different options for writing JSON data.
NSLineBreakMode class defines different line break styles to apply when a line is longer its container.
NSLocale class defines an object that represents the locale that is used.
NSLocalizedString class defines methods used in order to get the localized version of a String.
NSLog class is used in order to log messages related to errors.
NSMutableData class defines mutable data objects that are used by the application as data storage.
NSMutableURLRequest class defines an object that represents a modifiable URL request.
NSNotification class defines information objects used by the NSNotificationCenter for application's intercommunication.
NSNotificationCenter class defines an object that handles the notifications of the application.
NSNumberFormatter class defines an object that manages the representation format of numbers.
NSNumberFormatterStyle class defines different types of format styles applied to numbers.
NSObject class is the base class of all objects.
NSOrdered class defines different types of ordering objects of a request.
NSRange class defines an object that represents a range defined by a location and length.
NSRunLoop class defines an object that is responsible for dispatching input sources such as messages and events to threads.
NSRunLoopMode class defines different loop modes for the NSRunLoop.
NSSearchPathDirectory class defines different directories used by the NSFileManager.
NSSearchPathDomainMask class defines different base locations of paths used by the NSFileManager.
NSString class defines an object that is the foundation of the textual functionality of the application.
NSStringCompareOptions class defines different string search and comparison options.
NSStringEncoding class defines different types of NSString's supported encodings.
NSTimer class defines an object that represents a timer that is used for scheduling actions.
NSTimeZone class defines an object that represents the time zone of the application.
NSURL class defines an object that represents a URL.
NSURLCache class defines an object that represents cache for URL load requests.
NSURLConnection class defines an object that is responsible to perform the loading of a URL request.
NSURLRequest class defines objects that represent the URL load requests of the application.
NSURLRequestCachePolicy class defines different types of cache policies concerning the URL requests.
NSURLResponse class defines an object that represents a response to an HTTP URL load request and it used in collaboration with the NSURLRequest objects.
NSUserDefaults class defines an object that provides support related to user default preferences storing.
NSUUID class defines UUID strings that provide unique identification of items used within the application.
NSXMLParser class defines an object that is used in order to parse XML documents.
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