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util.isomorph- Determine isomorphism
Provides a procedure that determines whether two structures are isomorphic.
#t if obj1 and obj2 are isomorphic.
context is used if you want to call
object-isomorphic? described below.
(isomorphic? '(a b) '(a b)) ⇒ #t (define x (cons 0 0)) (define y (cons 0 0)) (isomorphic? (cons x x) (cons x y)) ⇒ #f (isomorphic? (cons x x) (cons y y)) ⇒ #t
With this method, you can customize how to determine isomorphism of
two objects. Basically, you will call
for each slots of object you want to traverse; the method should return
#t if all of the test succeeds, or return
context is an opaque structure
that keeps the traversal context, and you should pass it to
isomorphic? as is.
The default method returns
#t if obj1 and obj2 are
equal (in the sense of
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