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`util.isomorph`

- Determine isomorphism__Module:__**util.isomorph**-
Provides a procedure that determines whether two structures are isomorphic.

__Function:__**isomorphic?***obj1 obj2 :optional context*Returns

`#t`

if`obj1`and`obj2`are isomorphic.`context`is used if you want to call`isomorphic?`

recursively inside`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

__Generic Function:__**object-isomorphic?***obj1 obj2 context*With this method, you can customize how to determine isomorphism of two objects. Basically, you will call

`isomorphic?`

recursively for each slots of object you want to traverse; the method should return`#t`

if all of the test succeeds, or return`#f`

otherwise.`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`equal?`

).

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This document was generated by *Shiro Kawai* on *May 28, 2012* using *texi2html 1.82*.