Factory Pattern

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The factory pattern consists of a collection of objects, a factory, and a client that requires instances of the objects. The client controls the process, but is decoupled from the actual construction of...

Observer Pattern

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closely related to pubsub pattern, in fact, many people think of pubsub as a special use of the observer pattern difference is that pubsub create global message buss for communication between components, while observer is...

Strategy Pattern

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The strategy pattern is used to allow for a behavior to be selected at code run time. this can be based on input data or other cues The different behaviors are knows as the strategies The strategy...

Publisher / Subscriber Pattern

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This Lesson teaches the Publisher / Subscriber pattern, which is used to allow modules to communicate with eachother without hard dependencies. It is a great pattern for decoupling modules in your program It is very...

Client Case Studies