Domain First
A blog about writing complex software using an object domain model
Classifying Software Systems
If one can’t differentiate between different types of software, how can one consider and choose between alternative approaches, paradigms, architectures, languages and technologies?
read moreA Structured-Objects Approach
What approach do you use to represent problems and model concepts into code? You may think your using a procedural or object-oriented approach. However, consider that you are likely using a structured-objects approach.
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Are you an Object or Functional Thinker?
In an object-oriented approach, one represents concepts, real or abstract, as objects. Like the objects you see and imagine around you, they can have behavior and state, and can collaborate together to represent a problem or system. In a functional programming...
read moreQuote: The Hardest Part of Building Software
“The hardest single part of building a software system is deciding precisely what to build.” Frederick Brooks - "No Silver Bullet"
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Is Java a Pure OO Language?
The question is contentious, because “purity” in this instance is subjective. The answer depends on your definition of “Pure” in this context. Some will say that unless everything is an Object, then it is not Pure. In Java, not everything is an...
read moreQuote: Architecture or Domain First
"Successful projects rarely concentrate on building all layers of the architecture at the same time. Instead, they concentrate first on the domain, for it represents the heart of the system. Get the domain right and it is far easier to get the rest of the...
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Which Side of Computing Do You Work On?
Ones perspective on solving problems in computing is typically determined by whether your experience has been in what I call the “left” side of computing or the “right”.
read moreUpdated: Understanding an Object-Oriented Approach
My article on Understanding an Object-Oriented Approach has been updated to include a section on a Data Modeling approach, and a final section that considers the use of Structured Programming in Object-Oriented Languages.
read moreAlan Kay and Building Software
An interesting question was asked on Quora. "Is Alan Kay correct that building software is still like the design and construction of ancient structures like the Pyramids, in the era before architecture?". Alan Kay himself wrote an answer, as did I. I wanted to...
read moreThe Rise of Functional Programming
Functional programming appears to be on the rise. Why is that, and is there a migration from imperative programming and object-orientation?
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The Requirements Dilemma
Sometimes an image says it all ...
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Understanding an Object-Oriented Approach and Alternatives
Discusses an Object-Oriented (OO) approach, by describing what are the alternatives, and what came before.
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