[Haskell-cafe] Re: List comprehension desugaring

[Neil Mitchell]

Hi

Sorry for the noise, I've now realised they are a left to right
rewrite system, the second rule is required to set up the base case.

Thanks

Neil

On 8/19/07, Neil Mitchell <ndmitchell at gmail.com> wrote:
> Hi,
>
> The Haskell desugaring for list comprehensions is given in:
>
> http://haskell.org/onlinereport/exps.html#list-comprehensions
>
> All the rules seem to be left to right rewrites, apart from the second
> one, which seems to be right to left. Is there some deep reason for
> this, or is this accidental.
>
> Thanks
>
> Neil
>