Re: Confusing typed/racket error message

Hi Taahir,

The keyword is #:replacement? instead of #:replacement (note the
question mark). I don't know enough Typed Racket to understand that
error message tho, sorry.

Cheers,
Shu-Hung

On Tue, Oct 3, 2017 at 1:40 AM, Taahir Ahmed <[email protected]> wrote:
> Hi,
>
> I have been implementing some toy problems in typed/racket.  However,
> I have hit a wall while trying to invoke `(random-sample)`.  This
> example program:
>
> ````
> #lang typed/racket
>
> (require typed/racket/random)
>
> (define (example (limit : Integer)
>                  (count : Integer))
>   : (Listof Integer)
>   (let* ((random-sample-inst (inst random-sample Integer)))
>     (random-sample-inst (in-range -10 limit)
>                         count
>                         #:replacement #f)))
>
> (example 10 5)
> ````
>
> gives the error message:
>
> ````
> ; /home/ahmedtd/project/reinforcement-learning/type-reproducer.rkt:9:4:
> Type Checker: No function domains matched in function application:
> ; Types: (Sequenceof Integer) Integer Pseudo-Random-Generator #f * ->
> (Listof Integer)
> ;        (Sequenceof Integer) Integer #f * -> (Listof Integer)
> ; Arguments: (Sequenceof Integer) Integer #f *
> ; Expected result: (Listof Integer)
> ;
> ;   in: (random-sample-inst (in-range -10 limit) count #:replacement #f)
> ````
>
> Maybe I'm missing something obvious, but it seems like the types of
> the supplied arguments are an exact match for the types of the second
> candidate domain printed in the error message.
>
> Any ideas on how to invoke this function from typed/racket?
>
> Thanks,
>
> Taahir Ahmed
>
> --
> You received this message because you are subscribed to the Google Groups "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
> For more options, visit https://groups.google.com/d/optout.

-- 
You received this message because you are subscribed to the Google Groups "Racket Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
For more options, visit https://groups.google.com/d/optout.