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Get the number of slots of a shelf object
- A shelf handle or shelf name
- A variable or integer (output)
Retrieves the fixed number of slots that the shelf was created with.
The slots are numbered from 1 to Size.
Note: If ShelfHandle is not a handle, then it must be an atom or a
compound term, and the shelf is identified by this term's toplevel
functor together with the context module.
Modes and Determinism
This predicate is sensitive to its module context (tool predicate, see @/2).
- (4) instantiation fault
- ShelfHandle is not instantiated
- (5) type error
- ShelfHandle is not a shelf
- (40) stale object handle
- ShelfHandle refers to an already destroyed shelf
?- shelf_create(foo(0,0,0), Shelf),
Shelf = $&(shelf,"36nzz7")
S = 3
Yes (0.00s cpu)
shelf_create / 2, shelf_create / 3