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Exploring Solution Spaces, Keith Ray's blog on Software development and other topics.
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2005.Mar.01 Tue
XP Explained, Second Edition, again (and IXP)
Check out Michele Marchesi's summary
1st edition Values: Communication, Simplicity, Feedback, Courage.
2nd edition Values: Communication, Simplicity, Feedback, Courage, Respect.
IXP Values: Communication, Enjoyment, Learning, Simplicity, Quality.
1st edition Principles: Rapid Feedback, Assume Simplicity, Incremental Change, Embracing Change, Quality Work, Teach Learning, Small Initial Investment, Play to Win, Concrete Experiments, Open/honest Communication, Work with people's instincts - not against them, Accepted Responsibility, Local Adaptation, Travel Light, Honest Measurement.
2nd edition Principles: Humanity, Economics, Mutual Benefit, Self-Similarity, Improvement, Diversity, Reflection, Flow, Opportunity, Redundancy, Failure, Quality, Baby Steps, Accepted Responsibility.
1st edition Practices: Planning Game, Short Releases, On Site Customer, Metaphor, Sustainable Pace, Pair Programming, Continuous Testing, Refactoring, Simple Design, Continuous Integration, Collective Code Ownership, Coding Standards.
IXP Practices: Readiness Assessment, Continuous Risk Management, Project Chartering, Project Community, Test-Driven Management, Sustainable Pace, Storytelling, Planning Game, Storytesting, Frequent Releases, Small Teams, Continuous Learning, Sitting Together, Iterative Usability, Evolutionary Design, Story Test-Driven Development, Continuous Integration, Collective Ownership, Coding Standard, Refactoring, Domain-Driven Design, Pairing, Retrospectives.
2nd edition Practices:
Primary Practices: Stories, Weekly Cycle, Quarterly Cycle, Slack, Sit Together, Whole Team, Informative Workspace, Energized Work, Pair Programming, Incremental Design, Test-First Programming, Ten-Minute Build, Continuous Integration.
Corollary Practices: Real Customer Involvement, Incremental Deployment, Negotiated Scope Contract, Pay-Per-Use, Team Continuity, Shrinking Teams, Root-Cause Analysis, Code and Tests, Shared Code, Single Code Base, Daily Deployment.
Bill Wake summarizes the key points of this new book, which is a complete rewrite -- different from the first edition in both tone and content. Check it out.
J. B. (Joe) Rainsberger on the XP Mailing list described the first edition as teaching on the martial arts level of Shu (learning the rules via practice) and the second edition as Ha (reflecting on the rules and their exceptions), referring to the wiki page Shu Ha Ri.