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From: maxima-bounces at math.utexas.edu
[mailto:maxima-bounces at math.utexas.edu] On Behalf Of Zach
....
This seems pretty good, does Perl have better capabilities? I
cannot think of situations that require other tests off the top of my head
(but there must be some or CMU wouldn't have bothered with extending their
hash tables).
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I suspect that hash tables in (extended) versions of Common Lisp have
additional capabilities,
beyond that in Perl
e.g.
non-standard hashing functions
non-standard testing functions (discussed in this thread)
"weak" hashtables
valueless hashtables.
see
http://www.haible.de/bruno/papers/cs/weak/WeakDatastructures-presentation.pd
f
for a discusion of "weak" stuff.