General talk about software patterns

[Linda Rising <risingl1 AT cox.net>]

Hi Jan,

When I was working on the Pattern Almanac, I included references to what 
I called "experience
reports" to show pattern users examples of real-world applications in 
various domains. Although
the almanac was published in 2000, I'm pretty sure that the heavily used 
patterns are still the favorites.

Unfortunately, I can't find that list, however, it could be re-created 
easily by going through the almanac
and noting which experience papers reference which patterns.

I would be very surprised to see Visitor on the top 10 :-)!




Linda



Jan Hannemann wrote:

> I'm wondering which patterns are actually used more frequently than others
> in practice(*). In particular, I'd like to know which the top-5 (or top-10)
> Gang-of-Four patterns(**) are in terms of number of pattern instances found
> in practice. I do realize that this is hard to determine objectively, but
> subjective rankings are fine, too.
>
> For example, I think it is pretty clear that Interpreter is less commonly
> used in practice than, say, Observer. 
>
> Are there by chance even research papers on this topic available? Or on
> related topics (empirical study of patterns in the wild)?
>
> Opinions are welcome as well. A few years back I spoke to one of the authors
> of the GoF book and he gave me this informal list of what he thought were
> the top-9 according to his experience (most commonly used on top):
>
> Observer
> Composite
> Singleton
> Abstract Factory
> Visitor
> Adapter
> Factory Method
> Template Method
> Command
>
> Can you confirm this list, or do you have different experiences with
> patterns used in practice?
>
> Thanks!
>
> --Jan
>
>
> PS: To provide some context: my research involves design patterns (in
> particular, the GoF patterns) and I want to make sure I focus on patterns
> that are actually used in software development.
>
> (*)  With "in practice" I mean "in real-word software systems". 
> (**) I'm only interested in the GoF patterns.
>
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>  

--
Author of "Fearless Change: patterns for introducing new ideas"
http://www.cs.unca.edu/~manns/intropatterns.html