>>>>> "MLivshin" == Michael Livshin <[EMAIL PROTECTED]> writes:
MLivshin> Dirk Herrmann <[EMAIL PROTECTED]> writes:
>> On Thu, 6 Jul 2000, Han-Wen Nienhuys wrote:
>>
>> > why do assq-ref and friends return #f when the key is not
>> found, in > stead of #<unspecified>? This makes it kind of hard
>> to distinguish > between an alist not containing KEY and (KEY
>> . #f)
>>
>> Actually, it would be best to throw an error if the key is not
>> found.
MLivshin> no. it would introduce a Guile-specific aspect into an
MLivshin> otherwise portable specification.
Since assq-ref is suppose to "rhyme" with vector-ref, and vector-ref
throws an error, it seems like assq-ref should throw and error as
well. Different schemes handle vector-ref out of bounds errors
differently so I don't see the problem with assq-ref throwing an error
in a GUILE specific way (vector-ref does too).
Clark
