[racket] Type of argument in a function

תודה רבה לכולם :)
עזרתם לי מאוד!


2014-07-20 15:59 GMT+03:00 David Van Horn <dvanhorn at cs.umd.edu>:

> On 7/20/14, 7:04 AM, קוראל אלימלך wrote:
> > How can i define that a function will get an integer argument?
> >
> > is its possible?
> >
> > for example:
> > (define (func (x::Number))) /// its not working that way
> >
> > and if ill call the function with string there will be an error..
>
> In addition to the suggestions to use Typed Racket, you may also want to
> read about contracts:
>
> (define/contract (f x) (-> integer? integer?)
>   (* x x))
>
> http://docs.racket-lang.org/guide/contracts.html
>
> David
>
>
>
> ____________________
>   Racket Users list:
>   http://lists.racket-lang.org/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20140720/10ab4259/attachment.html>