constraints.md

List of possible constraints for a kata

• No constraints
• Small methods: 4 lines each
• No if statements
• No primitives
• No loops
• Baby steps
• Change approach, if you're doing bottom-up (Cell class first),try top-down (Board class first)
• Communicate clearly, precise naming
• Legibility. Let the code be read as if it was a small story.
• No more than one level of indentation per method
• Functional programming: No "variable" may be modified after it has a value
• Imperative Programming: No return values for any method
• Verbs instead of nouns
• Force at least 4 times duplication to emerge before removing it
• TDD as if you meant it
• No Mouse
• Text editor only
• Paper only
• Mute pair programming
• Have everyone vote for the constraint
• Evil Implementer (or "Find The Loophole"): Only implement what it takes to pass the test, even if it doesn't drive the product forward at all!
• Object calisthenics
  • Only One Level Of Indentation Per Method
  • Don't Use The ELSE Keyword
  • Wrap All Primitives And Strings
  • First Class Collections
  • One Dot Per Line
  • Don't Abbreviate
  • Keep All Entities Small
  • No Classes With More Than Two Instance Variables
  • No Getters/Setters/Properties

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