• Testing
  • Tests written before coding
  • No code written until test fails
• Refactoring
  • Continuously look for ways to simplify
  • Take time to simplify whenever possible;
    other work may be delayed
• Pair Programming
  • All work done in pairs
  • One partner, using keyboard and mouse, focuses on implementing current method
  • Other partner takes broader view:
    • thinks strategically
    • considers other test cases that do not yet work
    • looks for opportunities to refactor
• Collective Ownership
  • Anyone allowed to improve any part of code at any time
  • Everyone takes responsibility for everything

created April 29, 2003 last revised May 13, 2003

previous   next