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Managed Chaos
Naresh Jain's Random Thoughts on Software Development and Adventure Sports
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OO Design Principles

Following Object Oriented Design Principles have really helped me designing my code:

Along with these principles, I’ve also learned a lot from the 17 rules explained in the Art of Unix Programming book:

  • Rule of Modularity: Write simple parts connected by clean interfaces
  • Rule of Clarity: Clarity is better than cleverness.
  • Rule of Composition: Design programs to be connected to other programs.
  • Rule of Separation: Separate policy from mechanism; separate interfaces from engines
  • Rule of Simplicity: Design for simplicity; add complexity only where you must
  • Rule of Parsimony: Write a big program only when it is clear by demonstration that nothing else will do
  • Rule of Transparency: Design for visibility to make inspection and debugging easier
  • Rule of Robustness: Robustness is the child of transparency and simplicity
  • Rule of Representation: Fold knowledge into data so program logic can be stupid and robust
  • Rule of Least Surprise: In interface design, always do the least surprising thing
  • Rule of Silence: When a program has nothing surprising to say, it should say nothing
  • Rule of Repair: When you must fail, fail noisily and as soon as possible
  • Rule of Economy: Programmer time is expensive; conserve it in preference to machine time
  • Rule of Generation: Avoid hand-hacking; write programs to write programs when you can
  • Rule of Optimization: Prototype before polishing. Get it working before you optimize it
  • Rule of Diversity: Distrust all claims for “one true way”
  • Rule of Extensibility: Design for the future, because it will be here sooner than you think

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