This approach involves creating a class that is globally accessible to the entire code base at anytime. Any kind of global manager class is often frowned upon in software engineering circles, partly since the name manager is vague and doesn't say much about what it's meant to do, but mostly because problems can be difficult to debug. Changes can occur from anywhere and at any point during runtime, and such classes tend to maintain state information that other systems rely upon. It is also perhaps the most difficult approach to change or replace since many of our classes might contain direct function calls into it, requiring each to be modified at a future date if it were to be replaced. Despite all of these drawbacks, it is ...
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