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Delegates and the Observer Pattern

An overview of the options we have for building flexible notification systems between game components

Ryan McCombe
Updated
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Questions & Answers

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Why Use Delegates?
Why do we need to use delegates instead of just calling functions directly?
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Delegate Performance Impact
How does the performance of delegates compare to direct function calls?
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Handling Multiple Event Types
Can I have an observer observe multiple different types of events from the same subject?
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Pausing Observer Notifications
Is it possible to temporarily pause notifications to specific observers?
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std::function vs Function Pointer Performance
What's the overhead of using std::function compared to raw function pointers?
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Smart Pointers with Observers
Can I use smart pointers to automatically manage observer registration/unregistration?
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Observer Pattern Without Dynamic Allocation
Is it possible to implement the observer pattern without dynamic memory allocation?
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