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📅 March 12, 2021

Is A and Has A Concepts in Object-Oriented Design

The ideas of “is a” and “has a” are often discussed as part of object-oriented design. These concepts may seem simple and obvious. However, they can often be confused, and complex systems can blur the lines between them. We start…

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📅 March 12, 2021

Granular Interfaces – How Much OO Is Practical?

The ideas of cohesion and coupling point us to paths that either place functionality in smaller or larger classes. We discuss granular interfaces in this episode as an introduction to those “right-sizing” discussions. Not all OO designs are created equal.…

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📅 March 12, 2021

Inheritance – Polymorphism In A Hierarchical Manner

We switch gears in this episode and start to look at inheritance. This is a core feature of object-oriented design and the most recognizable attribute. Child classes are utilized through polymorphic support. Thus, we have a natural transition into this…

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📅 March 6, 2021

Interfaces – An Object-Oriented Contract For Usage

This episode, we look at interfaces. These are not supported by all languages. However, when they are supported, they are very useful. The interface specification allows us to provide language-based constraints for our method signatures. It also is an excellent…

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📅 March 4, 2021

Flexibility in OOP – Build in hooks for change

One of the essential concepts to understand is flexibility in OOP. A good design requires the ability to extend it. There are ways to do this. However, they require us to incorporate mechanisms for validation and growth. That means we…

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📅 March 4, 2021

Code Consistency – Critical For Practical Polymorphism

One of the challenges of good polymorphic design is code consistency. We are building a way to communicate with developers. Therefore, our language or syntax needs to be easy to understand. Likewise, we need to set and meet expectations properly.…

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