CSC/ECE 517 Fall 2009/wiki3 4 br

Topic: DRY principle for data Most of the literature on the DRY principle relates to code. But the principle also applies to data. Survey the issues related to copying the same data, and give reasons (e.g., caching) why it might sometimes be desirable, and how one should decide where it is helpful not to follow this general rule.

DRY 3 (or Don't Repeat Yourself) describes ...

An overview of the concepts

Don't Repeat Yourself

File:DRY.jpg

DRY principle - related to code

• Example: DRY

 class Person
   attr_accessor :name
 end

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