Can I dynamically construct a trait in Scala that is computed based on the class it extends?

The easiest way I can think of to achieve such a behavior would be to use Scala 2.10's Dynamic feature. Thus Point must extend Dynamic and you can "mix in" arbitrary fields by adding the calculation logic to the member functions selectDynamic and updateDynamic . This is not quite what "mix in" actually refers to, but it nevertheless allows you to add functionality dynamically.

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