On 5/18/05, felix winkelmann <[EMAIL PROTECTED]> wrote:
>
> -- procedure: hash-table-ref
> (hash-table-ref HASH-TABLE KEY [DEFAULT])
> Returns the entry in the given hash-table under `KEY'. If no entry
> is stored in the table, `DEFAULT' is returned, or `#f' if
> `DEFAULT' is not given.
>
>
> cheers,
> felix
You misunderstood Felix. The question is
"""
what's the rationale for
(hash-table-ref h 'non-existing-key)
returning #f instead of an error?
"""
Returning #f is ambiguous, it could mean that the key exists with value #f!
Michele Simionato
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