Instance Method


Conditionally archives a given object.


func encodeConditionalObject(_ object: Any?)



The object to archive.


This method overrides the superclass implementation to allow object to be encoded only if it is also encoded unconditionally by another object in the object graph. Conditional encoding lets you encode one part of a graph detached from the rest. (See Archives and Serializations Programming Guide for more information.)

This method should be invoked only from within an encode(with:) method. If object is nil, the NSArchiver object encodes it unconditionally as nil. This method raises an NSInvalidArgumentException if no root object has been encoded.

See Also

Archiving data

class func archivedData(withRootObject: Any) -> Data

Returns a data object containing the encoded form of the object graph whose root object is given.

class func archiveRootObject(Any, toFile: String) -> Bool

Creates a temporary instance of NSArchiver and archives an object graph by encoding it into a data object and writing the resulting data object to a specified file.

func encodeRootObject(Any)

Archives a given object along with all the objects to which it is connected.