The Four Rules of Simple Design

When you first get involved with agile development, you quickly hear about the SOLID principals and design patterns. They are a bit much to bite off at first. Through the Ruby community I have discovered a simpler more fundamental set of guidance for beginners that appear to be fundamentals for the higher level principals of SOLID, called the Four Rules of Simple Design: > * Pass all tests > * Clear, expressive & consistent > * Duplicates no behavior or configuration > * Minimal methods, classes & modules

Here is an [amazing introduction to the concept](http://www.jbrains.ca/permalink/the-four-elements-of-simple-design) by [JB Rains](http://www.jbrains.ca/).
Written on December 21, 2011