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eieio: Generics

 
 6.1 Generics
 ============
 
 Each EIEIO method has one corresponding generic.  This generic provides
 a function binding and the base documentation for the method symbol
 ((elisp)Symbol Components).
 
  -- Macro: defgeneric method arglist [doc-string]
      This macro turns the (unquoted) symbol METHOD into a function.
      ARGLIST is the default list of arguments to use (not implemented
      yet).  DOC-STRING is the documentation used for this symbol.
 
      A generic function acts as a placeholder for methods.  There is no
      need to call ‘defgeneric’ yourself, as ‘defmethod’ will call it if
      necessary.  Currently the argument list is unused.
 
      ‘defgeneric’ signals an error if you attempt to turn an existing
      Emacs Lisp function into a generic function.
 
      You can also create a generic method with ‘defmethod’ (
      Methods).  When a method is created and there is no generic
      method in place with that name, then a new generic will be created,
      and the new method will use it.
 
    In CLOS, a generic call also be used to provide an argument list and
 dispatch precedence for all the arguments.  In EIEIO, dispatching only
 occurs for the first argument, so the ARGLIST is not used.
 

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