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Re: Prototypes
On Thursday, April 10, 2003, at 02:20 AM, Michael Burschik wrote:
The prototype of vector-find does not specify the function's return
value,
which should probably be "value".
Fixed.
It might also be mentioned that the return
value is ambiguous with regard to #f, which might be a vector element
that
satisfied the predicate, or signal that the end of the vector was
reached
without satisfying the predicate.
Can you think of a better thing to do in this case?
Or should there not even be a VECTOR-FIND (use VECTOR-INDEX and then
VECTOR-REF
instead)?
The return value of vector-find-tail, on the other hand, should
probably be
"vector" instead of "value", as the reference implementation will
return an
empty vector in case no element satisfied the predicate.
Fixed.
The prototype of vector-any should probably be (vector-any pred? vec1
...
vecn), otherwise the variable "n" in the following discussion would be
unbound. In many other functions defined in section 4.7, the arity of
the
predicate is not specified. Is this deliberate?
I've fixed a bunch of them. I don't know if I got them all, so please
inform me
of any others you find.
Regards
Michael Burschik
Note: the 'Fixed.' comments indicate that I've fixed it and uploaded a
new copy,
but not to srfi.schemers.org -- see the updated copy at:
http://www.bloodandcoffee.net/campbell/html/srfi-43.html