QUERY
I don't see a real use case for the return value of Fclrhash, and I
find it hard to imagine one. I think it's preferable to *not*
document the return value of functions that are only useful for their
side effects. Mike?
In the case of puthash, there's an obvious theoretical use, in fact
two of them:
(setq would-this-want-key-or-value?
(puthash (complex-expr-1) (complex-expr-2) hash-table))
Is it obvious that returning VALUE is the right thing? What Would
Common Lisp Do?
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