Re: [Haskell-cafe] arr considered harmful

This seems basically what I'm talking about, except even more hardcore. I think mostly what I'm suggesting is that the GHC arrow preprocessor to compile to something like generalized arrows, by default, with current Arrows as a special case. -- ryan On Mon, Oct 31, 2011 at 5:48 PM, Felipe Almeida Lessa < felipe.lessa@gmail.com> wrote:

...

The arrow syntax translation uses arr to do plumbing of variables. I

...

a promising project would be to figure out exactly what plumbing is needed, and add those functions to a sort of 'PrimitiveArrow' class. All of

On Mon, Oct 31, 2011 at 10:33 PM, Ryan Ingram wrote: think these

...

plumbing functions are trivially implemented in terms of 'arr', when it exists, but if it doesn't, it should be possible to use the arrow syntax regardless.

There are already generalized arrows [1]. Is that what you are looking for?

Cheers,

[1] http://www.cs.berkeley.edu/~megacz/garrows/

-- Felipe.