[r6rs-discuss] immutable hash tables and eqv?

[Abdulaziz Ghuloum]

On May 24, 2007, at 1:02 PM, R. Kent Dybvig wrote:

> I think this decision to (un)specify eqv? in this manner was a mistake
> and hope we can agree to fix the mistake.

Actually, given that eqv? and eq? are completely unspecified
for immutable pairs, I don't see how even simple procedures
like list? can be implemented portably in a straightforward
manner.  The definition of list? in TSPL[*] is not guaranteed
to work when passed an immutable list of length 2 or greater.

Aziz,,,

[*] http://www.scheme.com/tspl3/further.html#defn:list?