Return signatures in case expressions

[Simon Marlow]

On 04 August 2004 16:50, Volodimir Rudenko wrote:

>         "Pattern type signatures, including the result part, can be
>         used in case expressions:
>                 case e of { (x::a, y) :: a -> x } ".
> 
> On the other hand, Subsection 7.4.10.4. 'Result type signatures' does
> not mention 'the case of case expressions' (sorry for pun).

That example isn't quite right.  Extra parentheses are needed:

  case e of { ((x::a, y) :: a) -> x } 

I've fixed the docs.

Cheers,
	Simon