S[O]LID - Open/Closed Principle by example

In my previous article I covered Single Responsibility Principle. Today I'm going to write about the "O" in SOLID - Open/Closed Principle.

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[S]OLID - Single Responsibility Principle by example

I write a lot about patterns and Object-Oriented Design, so I couldn't miss opportunity to write about SOLID principles of Object-Oriented Design. I'm going to show by example how we can use these principles in Ruby.

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Facade Pattern as the way to implement Aggregate

Hi guys. Today I would like to discuss Facade Pattern and a little bit of Domain-Driven Design. I will start from description of Facade Pattern and show how it can help us to implement Aggregate - one of the main concepts of DDD.

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