[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Scheme-reports] values
Razvan Rotaru scripsit:
> The truth is most of the time I'm interested in one value, not all
> of them. In my oppinion Lisp is right when assuming that one of the
> values returned as result is more important than others, and does not
> raise an error when I use such a function in a context where only one
> result is expected.
Use this trivial wrapper:
(lambda () exp)
(lambda x (if (null? x) 'bogus (car x)))))))
> Additionally, in the way scheme treats multiple values, there is
> little difference between returning a list with the values, and
> returning the values as such (using the (values ...) form). I could
> very well use the list, and would not need to have the (values ...)
> form built into the language.
You could. However, there may be a difference in performance.
An observable characteristic is not necessarily John Cowan
a functional requirement. --John Hudson cowan@x
Scheme-reports mailing list