Tag Archives: design

Great Expectations

Glennan Carnie

Glennan Carnie

Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.

He specialises in C++, UML, software modelling, Systems Engineering and process development.
Glennan Carnie

Latest posts by Glennan Carnie (see all)

Previously, we’ve looked at the basic concepts of function parameter passing, and we’ve looked at the mechanics of how parameters are passed at the Application Binary Interface (ABI) level.

Far too often we focus on the mechanisms and efficiency of parameter passing, with the goal: if it’s efficient then it’s good; that’s all there is to it.  In this article I want to move past simple mechanics and start to explore function parameter design intent – that is, what can I […]

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Software Duct Tape – Binding the C++ Universe Together

Glennan Carnie

Glennan Carnie

Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.

He specialises in C++, UML, software modelling, Systems Engineering and process development.
Glennan Carnie

Latest posts by Glennan Carnie (see all)

One of the cornerstones of object-oriented design is the concept of objects interacting by sending messages to form mechanisms – units of higher-order (or ‘emergent’) behaviour.

In order to send a message (in this case, invoke a member function) an object must have a ‘link’ to the target object. That link is formed by building in an association between the two classes as part of the type’s definition.

In this article we look at building associations between classes and forming run-time links […]

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Sailing the Seven C’s of design*

Glennan Carnie

Glennan Carnie

Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.

He specialises in C++, UML, software modelling, Systems Engineering and process development.
Glennan Carnie

Latest posts by Glennan Carnie (see all)

I’m always looking for nice little mnemonics to help out remember the important concepts in design.  Here’s one for model-driven development I call the “Seven C’s”.  It basically enumerates the seven stages a design goes through, from initial idea to code.

CONCEPT The Concept phase is about understanding the problem.  In other words: requirements analysis.  When you’re in Concept mode your main focus is on validation – am I solving the right problem for my […]

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Elizabethan guidance on Object-Oriented software design

Glennan Carnie

Glennan Carnie

Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.

He specialises in C++, UML, software modelling, Systems Engineering and process development.
Glennan Carnie

Latest posts by Glennan Carnie (see all)

So what did the Elizabethans know about software development?  Well, in truth, nothing whatsoever.  But what they had begun to do is codify and systematise the knowledge and experience of masters in manuals, treatises and books.  Some of the earliest documents of this form refer to the martial arts or, as it was known at the time the ‘Arts of Defence’

In martial arts one learns practical skills (in this case how to defend oneself against any enemy) through practice and […]

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