Vassil Nikolov scripsit:

>   And answering this question should especially take into account
>   whether, like procedures (and unlike numbers, immutable lists,
>   immutable strings, immutable vectors), there is no other way of
>   testing those values for equality.

In R6RS, you can write a portable reflective equality predicate that
descends through records.  In R7RS-small you cannot, because there are
no record inspection procedures.  In both cases, both immutable and
mutable records are considered to have identity.

--
John Cowan              cowan@ccil.org          http://www.ccil.org/~cowan
C'est la` pourtant que se livre le sens du dire, de ce que, s'y conjuguant
le nyania qui bruit des sexes en compagnie, il supplee a ce qu'entre eux,
de rapport nyait pas.               --Jacques Lacan, "L'Etourdit"

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