Real World Specification
This project specifies the behavior of a number of methods that may optionally be added to any object. The motivation behind this is to encourage greater code reuse. You can create functions that just rely on objects having implementations of the methods below, and in doing so you can make them work with a wide variety of different, but related data structures.
For the purposes of this, spec, an "entity" is an object that has an
[[equivalent]] operation (see bellow) and may implement some or all of the other methods.