instantiates_class/2-3

Description

instantiates_class(Instance, Class)

instantiates_class(Instance, Class, Scope)

Enumerates, by backtracking, all pairs of objects such that the first one instantiates the second.

Template and modes

instantiates_class(?object_identifier, ?object_identifier)

instantiates_class(?object_identifier, ?object_identifier, ?entity_scope)

Errors

Instance is neither a variable nor a valid object identifier:

type_error(object_identifier, Instance)

Class is neither a variable nor a valid object identifier:

type_error(object_identifier, Class)

Scope is neither a variable nor a valid entity scope:

type_error(entity_scope, Scope)

Examples

| ?- instantiates_class(water_jug, state_space).

| ?- instantiates_class(Space, state_space, public).

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Last updated on: July 4, 2000