What is NSProxy?
An abstract superclass defining an API for objects that act as stand-ins for other objects or for objects that don’t exist yet.
How do you use NSInvocation?
Think of it like sending an email. You open up a new email ( NSInvocation object), fill in the address of the person (object) who you want to send it to, type in a message for the recipient (specify a selector and arguments), and then click “send” (call invoke ). See Using NSInvocation for more information.
What is Nsobject in Swift?
The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.
What is NSInvocation?
Overview. NSInvocation objects are used to store and forward messages between objects and between applications, primarily by NSTimer objects and the distributed objects system. An NSInvocation object contains all the elements of an Objective-C message: a target, a selector, arguments, and the return value.
What is NSObject protocol?
The NSObject protocol defines a set of basic methods that all root classes are expected to implement. This way, code can count on those methods being there. The NSObject class conforms to the NSObject protocol, which means that the NSObject class implements these basic methods: @interface NSObject
What does NSObject mean?
NSObject is the root class of all ordinary Objective C inheritance hierarchies; it’s the one class that has no superclass. It’s through NSObject that instances of all classes obtain their ability to behave as objects.
What is NSInvocation Swift?
NSInvocation objects are used to store and forward messages between objects and between applications, primarily by NSTimer objects and the distributed objects system. An NSInvocation object contains all the elements of an Objective-C message: a target, a selector, arguments, and the return value.
What is the NSObject?
Essentially the NSObject is the base object type in Apple development. The NSObject defines all things that are shared between all classes that extend from it: NSObject is the root class of most Objective-C class hierarchies.
What is Nsdictionary?
An object representing a static collection of key-value pairs, for use instead of a Dictionary constant in cases that require reference semantics.
How do I create an NSArray in Objective-C?
Creating an Array Object The NSArray class contains a class method named arrayWithObjects that can be called upon to create a new array object and initialize it with elements. For example: NSArray *myColors; myColors = [NSArray arrayWithObjects: @”Red”, @”Green”, @”Blue”, @”Yellow”, nil];