Observer - removing events
In the last lesson we created an event dispatcher. In this lecture, we will add the functionality to remove events as well.
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- Linking objects to each other in a chain. - no central control each link %u201Cdecides%u201D if to continue. - Ideal for complex animations that effect other objects.
06:10
Chain of Responsibility - Part 2
- Decentralized logic making. - Each link can be changed. - A loop can be created as well.
08:55
Observer- adding and dispatching events
- Announcing events without explicit communication. - Event dispatching and listeners. - Building an Event dispatcher Decorator.
09:01
Observer - removing events
- When you want to stop listening. - Important for memory management. - Implementing a fully functional event dispatcher.
04:46
State
- Different states of an application demand different reactions. - The more aware the main object is to the difference the more it needs to think %u2013 conditions. - Extracting the states to separat
14:26