For tools to be aware of patterns, the patterns must be formalized, at least partially. At this point I must quote Gregor Hohpe to clarify my thoughts, as I strongly agree with his skipticism: Typically, when people ask me about « codifying » or « toolifying » patterns my first reaction is one of skepticism. Patterns are meant to [...]
In nature, out of every possible arrangement of several elements, only a few arrangements are stable. This is illustrated with atoms combined together, or smaller particles arranged together into atoms, where not every combination is sustainable. Unstable arrangements tend to move toward stable ones over time. Whenever you observe the elements, you mostly see stable [...]
How I became enthusiastic about patterns
oct 1st, 2009
In my very first job, I was doing R&D, working on a map-matching algorithm. The goal of this algorithm was to pinpoint a moving car on a vector map, based on the data from various sensors, including a GPS, an electronic compass and the car odometer. Such algorithm was essential for the business of the [...]
Manipulating things collectively
sept 10th, 2009
There is great power in being able to manipulate collective things as one single thing. It gives you simplicity, hence control. You can focus your attention on it and reason about it, even though behind the hood it is made of many parts. The composite thing is kept simple, therefore you can also deal with [...]
Toward smarter dependency constraints (patterns to the rescue)
août 30th, 2009
Low coupling between objects is a key principle to help you win the battle against software entropy. Making sure your dependencies are under control matters. Several tools can enforce dependencies restrictions, such as JDepend. However in a real project with many classes, packages and modules, the real issue is how to decide and configure the [...]
After Technical Debt, technical Options
août 10th, 2009
In finance, options are powerful tools for traders, and many design practices including design patterns can be seen as options. Options can -perhaps- yield a great benefit for a certain and immediate cost. If this cost is cheap enough it can be quite attractive. An option to buy a stock is a right to buy [...]
My definition of abstraction
avr 11th, 2005
One thing human are particularly pride of is our ability to use abstraction to solve problems. We in software development all know that « another level of abstraction can solve my problem ». But what do you call abstraction ? Abstract is the opposite of concrete. Concrete things are simply things, the kind of things a dog [...]
Analysis: don’t make things artificially different
avr 7th, 2005
In any order management systems a quote is not quite different of an order, just a different status of the same entity that is the description of a work to be done (status = POTENTIAL) or done (status = COMPLETED). However I usually find people are tempted to consider they are different concept with no [...]
UML is a too low level language
mar 15th, 2005
I recently taught design pattern to 20 of my co-workers in a kind of training session, here are some thoughts I had while preparing this presentation… In OO you usually end up with many classes, especially when you correctly use design patterns; each class is also generally very simple and rather short. Thus classes are [...]
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All original material of whatever nature created by Cyrille Martraire and included in this weblog and any related page, including the weblog's archive, is licensed under a Creative Commons License.
