Using a global dictionary for recovery

A powerful technique to implement the direct invocation of a recovery procedure makes an ingenious use of a global (public) Dictionary object. The method involves the use of command wrappers, function pointers, and callback functions. If you are not familiar with such object-oriented design patterns and concepts, then it is recommended that you first read Chapter 7, Using Classes, where some basic concepts are outlined.

The idea of using a dictionary to implement function pointers was first raised in an article published on back in 2007. A Dictionary object is capable of storing data of any type, including objects and even other Dictionary objects, thus serving as a tree-like structure. ...

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