Stefan Scholz
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ETL
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observer
A templated implementation to simplify the creation of the observer pattern and attempts to eliminate certain runtime errors by turning them into compile errors. More...
Data Structures | |
| class | observer_exception |
| The base class for observer exceptions. More... | |
| class | observer_list_full |
| The exception thrown when the observer list is full. More... | |
| class | observable< TObserver, MAX_OBSERVERS > |
| The object that is being observed. More... | |
| class | observer< T1, T2, T3, T4, T5, T6, T7, T8 > |
| The observer interface for eight notification types. More... | |
| class | observer< T1, T2, T3, T4, T5, T6, T7 > |
| The observer interface for seven notification types. More... | |
| class | observer< T1, T2, T3, T4, T5, T6 > |
| The observer interface for six notification types. More... | |
| class | observer< T1, T2, T3, T4, T5 > |
| The observer interface for five notification types. More... | |
| class | observer< T1, T2, T3, T4 > |
| The observer interface for four notification types. More... | |
| class | observer< T1, T2, T3 > |
| The observer interface for three notification types. More... | |
| class | observer< T1, T2 > |
| The observer interface for two notification types. More... | |
| class | observer< T1 > |
| The observer interface for one notification type. More... | |
Detailed Description
A templated implementation to simplify the creation of the observer pattern and attempts to eliminate certain runtime errors by turning them into compile errors.
The pattern consists of two template classes.
- Observer
This template may take up to eight notification types. Each notification type will generate a pure virtual 'notification' function. The class that inherits from this *must* define all of the 'notification' function overloads otherwise the object will remain 'abstract' and will not compile. This ensures that no overload can be forgotten.
- observable
The class derived from this will be observed by the above class. It keeps a list of registered observers and will notify all of them with the notifications.
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