On Metrics

With every kata there are many ways to solve the problem. To make web katas most effective, I recommend certain metrics for each one. These could be as vague as "as few LOC as possible" or as specific as "runs in less then 1ms". The actual metric depends on the subject under test.

A note on the LOC metric: "as few LOC as possible" doesn't mean compressing multiple lines into one or obfuscating your code. The spirit of this law is that you only do what is necessary to solve the problem.