[racket-dev] Please help me to fix the code

Thank you for letting me know.  I'll use the user list instead of this board
in the future.

On Tue, May 31, 2011 at 10:59 AM, Stephen Bloch <sbloch at adelphi.edu> wrote:

>
> On May 31, 2011, at 12:01 PM, Yingjian Ma wrote:
>
> > I am new to Racket.  I did not expect that output is
> "#<procedure:...uments...".  It is like an error message to me.
>
> Of course you didn't expect it; that's the way bugs happen.  Marijn's point
> is that the "#<procedure: ..." is actually the RETURNED VALUE from your
> function, not an error message.  The real question is, why is your function
> returning a function rather than a number?  (It's the "lambda".)
>
> Have you written a collection of test cases for this function?  Have you
> listed, inside the body of the function, an "inventory" of available
> expressions you're likely to need?  You're correctly testing whether the
> list is empty, and if not, you're correctly testing whether the first thing
> in the list matches what you're looking for, but if it is, you're returning
> a function rather than a number as I think you intended.
>
> And as somebody pointed out, this sort of question belongs on the racket or
> plt-edu list, not on the racket-dev list (which is for people developing and
> maintaining Racket itself, not people learning to program in it).
>
>
> Stephen Bloch
> sbloch at adelphi.edu
>
>
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