I have just completed to develop the 6th topic of my on going course for learning F#. It covers the usage of streams. If you are already familiar with the usage of streams in C# you will have no difficulty learning how to do the same when coding in F#. You can find both the slides and the video clip available for free personal usage at www.abelski.com. You can find below few samples for the video clips I have just prepared for this topic.
The Visitor Design Pattern
The visitor design pattern allows us to add operations to objects that already exist without modifying their classes and without extending them.
