What is an NSCoder?
NSCoder declares the interface used by concrete subclasses to transfer objects and other values between memory and some other format. This capability provides the basis for archiving (storing objects and data on disk) and distribution (copying objects and data items between different processes or threads).
What is Nssecurecoding?
A protocol that enables encoding and decoding in a manner that is robust against object substitution attacks.
What is required init coder aDecoder NSCoder?
If you subclass from something and need to create a new init , or override an existing init , Xcode will create an error telling you need also need to include required init?(coder aDecoder: NSCoder) . Everything that you set and do in storyboards, Xcode will then translate to code behind the scenes.
What is Codable protocol in Swift?
The Codable protocol in Swift is really a union of two protocols: Encodable and Decodable . These two protocols are used to indicate whether a certain struct, enum, or class, can be encoded into JSON data, or materialized from JSON data.
What is Nscopying?
A protocol that objects adopt to provide functional copies of themselves.
Why do we need init coder NSCoder?
The NSCoding protocol requires that you implement the required initializer init?(coder aDecoder: NSCoder). This initializer is what allows you to unarchive the ViewController using aDecoder object.
What is init with coder?
init(coder:) Returns an object initialized from data in a given unarchiver.
What is the use of NSObject?
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.
Which is the encoder and decoder in nscoding?
The first method encodes an object. The second one decodes the data to instantiate a new object. In short, encode (with:) is the encoder and init (coder:) is the decoder. Note: The presence of the keyword convenience here is not a requirement of NSCoding.
What are the methods of nscoding in Java?
NSCoding is a simple protocol, with two methods: -initWithCoder: and encodeWithCoder:. Classes that conform to NSCoding can be serialized and deserialized into data that can be either be archived to disk or distributed across a network.
Do you need nscoding to be codeable in macOS?
Any object class that should be codeable must adopt the NSCoding protocol and implement its methods. It is important to consider the possible types of archiving that a coder supports. In macOS 10.2 and later, keyed archiving is preferred.
How to make a class conform to nscoding?
You’re required to implement these two methods to make a class conform to NSCoding. The first method encodes an object. The second one decodes the data to instantiate a new object. In short, encode (with:) is the encoder and init (coder:) is the decoder.