Petr Pudlák <petr....@gmail.com> wrote:

>     class Arrow a => ArrowDelay a where
>         delay :: a b c -> a () (b -> c)
>
>     force :: Arrow a => a () (b -> c) -> a b c
>
> Perhaps it would be convenient to have ArrowDelay and the
> corresponding conversions included in the library so that defining and
> using Applicative instances for arrows would become more
> straightforward.

I appreciate the idea from a theoretical standpoint, but you don't
actually have to define an ArrowDelay instance for the notation to work.
The compiler can't check the laws anyway.


Greets,
Ertugrul

-- 
Key-ID: E5DD8D11 "Ertugrul Soeylemez <e...@ertes.de>"
FPrint: BD28 3E3F BE63 BADD 4157  9134 D56A 37FA E5DD 8D11
Keysrv: hkp://subkeys.pgp.net/

Attachment: signature.asc
Description: PGP signature

_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe

Reply via email to