eieio: Association Lists
9 Association Lists
*******************
Lisp offers the concept of association lists, with primitives such as
‘assoc’ used to access them. The following functions can be used to
manage association lists of EIEIO objects:
-- Function: object-assoc key slot list
Return an object if KEY is “equal” to SLOT’s value of an object in
LIST. LIST is a list of objects whose slots are searched. Objects
in LIST do not need to have a slot named SLOT, nor does SLOT need
to be bound. If these errors occur, those objects will be ignored.
-- Function: object-assoc-list slot list
Return an association list generated by extracting SLOT from all
objects in LIST. For each element of LIST the ‘car’ is the value
of SLOT, and the ‘cdr’ is the object it was extracted from. This
is useful for generating completion tables.
-- Function: eieio-build-class-alist &optional base-class
Returns an alist of all currently defined classes. This alist is
suitable for completion lists used by interactive functions to
select a class. The optional argument BASE-CLASS allows the
programmer to select only a subset of classes which includes
BASE-CLASS and all its subclasses.
Info Catalog
eieio: Predicates
eieio: Top
eieio: Customizing