Enumerable Contstants

This gem can be used for situations where enumerating over constant values is desired. This facilitates keeping the code DRY by keeping the constant values defined in one place, and still having the ability to enumerate over their values wherever they are needed.

Example use cases

• defining constants for possible field values in an AR object while using the values in a validates_inclusion_of validation
• defining constants for select box values in a view helper and using this gem to allow them to be enumerated over in the select tag