(goops.info.gz) Handling Slot Access Errors

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(goops.info.gz) Class Slots

(goops.info.gz) Accessing Slots

 
 Handling Slot Access Errors
 ---------------------------
 
 GOOPS calls one of the following generic functions when a "slot-ref" or
 "slot-set!" call specifies a non-existent slot name, or tries to
 reference a slot whose value is unbound.
 
  - generic: slot-missing
  - method: slot-missing (class <class>) slot-name
  - method: slot-missing (class <class>) (object <object>) slot-name
  - method: slot-missing (class <class>) (object <object>) slot-name
           value
      When an application attempts to reference or set a class or
      instance slot by name, and the slot name is invalid for the
      specified CLASS or OBJECT, GOOPS calls the `slot-missing' generic
      function.
 
      The default methods all call `goops-error' with an appropriate
      message.
 
  - generic: slot-unbound
  - method: slot-unbound (object <object>)
  - method: slot-unbound (class <class>) slot-name
  - method: slot-unbound (class <class>) (object <object>) slot-name
      When an application attempts to reference a class or instance
      slot, and the slot's value is unbound, GOOPS calls the
      `slot-unbound' generic function.
 
      The default methods all call `goops-error' with an appropriate
      message.
 

Info Catalog

(goops.info.gz) Class Slots

(goops.info.gz) Accessing Slots