Enumeration := Object clone.
This object contains all of the methods of the enumeration module, as well as the means of defining new enumeration types. It is the parent of all enumeration types defined by this module.
Enumeration toString := "Enumeration".
Enumeration values.Returns the list of possible values that this enumeration type can carry.
Enumeration value (n).Returns the nth enumeration value (0-based) that this type can
carry. Raises BoundsError if out of bounds. This is equivalent to
self values nth (n).
Enumeration of (list).Defines a new enumeration type. list should be a list of symbols. A
new subclass of Enumeration is constructed. For each symbol in
list, a slot on this new subobject is defined with the given symbol
name and with value a clone of the new enumeration subobject; these
clones are the instances of the new enumeration type. Each clone has a
toString which evaluates to the name to which it is associated.
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