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Contractive Delegation

April 20 2009

Well-factored code often has many small functions. If each adds value, and doesn't just pass the buck, then what do they all do? Typically, they contract their input by making it more specific. Then they delegate these specific data to a delegatee. read more

How to upgrade to the latest version of Rails

March 29 2009

I have upgraded several Rails 1.2.x programs to 2.x. This can be quite a leap, and some of the steps are counterintuitive, so this post attempts to put everything together, like a recipe. read more

Merb Mind Maps

February 16 2009

All blogs correlate their posts with tags. This blog post shows how to use these tags to display a mind map, hooking the current post into a tree of related posts. read more

Testing Rails Partials

October 15 2008

Test Driven Development works best when each test case targets one aspect of a class's interface. So this post will demonstrate a simple and direct way to test a partial without testing the Views, layouts, and Controller actions surrounding it. On very complex projects, this technique keeps your partials decoupled.… read more

Testing Rails Partials

October 09 2008

Test Driven Development works best when each test case targets one aspect of a class's interface. So this post will demonstrate a simple and direct way to test a partial without testing the Views, layouts, and Controller actions surrounding it. On very complex projects, this technique keeps your partials decoupled. read more