Goops Manual (original) (raw)

Node:Class Slots, Next:Handling Slot Access Errors, Previous:Instance Slots, Up:Accessing Slots


3.4.2 Class Slots

Slots whose allocation is per-class rather than per-instance can be referenced and set without needing to specify any particular instance.

class-slot-ref class slot-name procedure

Return the value of the slot named slot-name in class class. The named slot must have #:class or #:each-subclassallocation (see allocation).

If there is no such slot with #:class or #:each-subclassallocation, class-slot-ref calls the slot-missing generic function with arguments class and slot-name. Otherwise, if the slot value is unbound, class-slot-ref calls theslot-missing generic function, with the same arguments.

class-slot-set! class slot-name value procedure

Set the value of the slot named slot-name in class class tovalue. The named slot must have #:class or#:each-subclass allocation (see allocation).

If there is no such slot with #:class or #:each-subclassallocation, class-slot-ref calls the slot-missing generic function with arguments class and slot-name.