Chapter 10. Archiving

While an object-oriented program is running, a complex graph of objects is being created. It is often necessary to represent this graph of objects as a stream of bytes, a process called archiving (Figure 10.1). This stream of bytes can then be sent across a network connection or written into a file. For example, when creating a NIB from the XIB file you edited in the Interface Builder editor, the compiler is archiving objects into a file. (Instead of “archiving,” a Java programmer would call this process “serialization.”)

Figure 10.1. Archiving


When you need to recreate the graph of objects from the stream of bytes, you will ...

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