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felix winkelmann wrote:
Uninterned symbols are (currently) not provided by standard Scheme, and can be simulated by some magic prefix in portable code.
Nevertheless, the section eqv? has the following note on symbols:
The eqv? procedure returns #t if:
* obj1 and obj2 are both symbols and
(string=? (symbol->string obj1)
(symbol->string obj2))
===> #t
Note: This assumes that neither obj1 nor obj2 is an
``uninterned symbol'' as alluded to in section 6.3.3. This report does
not presume to specify the behavior of eqv? on
implementation-dependent extensions.
Since some implementation do have uninterned symbols, it implies
that it isn't great style to rely on the above.
--
Jens Axel Søgaard