ŒCLASS Class hierarchy for object or class

Not implemented for System classes

The monadic system function ŒCLASS returns a vector of references to the class hierarchy for an object (or a class). The right argument is an object reference or a class reference. The result is a vector of class references. The first element is a reference to the class of the object (or the class itself, if the right argument was a class reference). Subsequent elements are references to successive parent classes, if any.

For example, if the class Poem inherits from the class LiteraryWork, and Sonnet inherits from Poem:

      )CLASSES
LiteraryWork    Poem    Sonnet
     
       TwoLoves„ŒNEW Sonnet
      
       ŒCLASS Poem           © Argument is a Class reference
{Poem} {LiteraryWork}
       ŒCLASS Sonnet
{Sonnet} {Poem} {LiteraryWork}

       ŒCLASS TwoLoves       © Argument is an Object reference
{Sonnet} {Poem} {LiteraryWork}
       (ŒCLASS TwoLoves).ŒCLASSNAME
 Sonnet Poem LiteraryWork

ŒCLASS can also be used for external classes. For example, the Ruby DateTime class inherits from Date which inherits from Object:

      DT„'ruby' ŒSETUP 'require' 'Date'
      DT„'ruby' ŒNEW 'DateTime'
      ŒCLASS DT
{ruby:DateTime} {ruby:Date} {ruby:Object}