9. Association Lists

Lisp offers the concept of association lists, with primitives such as assoc used to access them. Eieio provides a few such functions to help with using lists of objects easily.

Function: object-assoc key slot list: Returns the first object in list for which key is in slot.

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 to choose from should it prove necessary.

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