On 04/01/2011 18:20, Ian Lynagh wrote:
On Mon, Dec 27, 2010 at 12:36:33PM +0000, Ian Lynagh wrote:
Deprecate and remove Prelude.catch and System.IO.Error.{catch,try} http://hackage.haskell.org/trac/ghc/ticket/4865
Suggested deadline: 24 Jan 2011.
Summary so far:
Deprecating/removing Prelude.catch seems to have consensus so far, with several people in favour and only one opposed.
A couple more people thought that System.IO.Error ought to export functions to handle the exceptions that it talks about.
GHC actually can't currently deprecate one export of 'catch' but not the other. Because of this, and because of the possible confusion etc with having 2 'catch' functions, I suggest we add catchIO and tryIO to System.IO.Error too. This will also give the new report a catch function it can refer to without having to worry about existential quantification etc.
What about the Haskell 98 compatibility problem? Do we say in GHC 7.2 that the haskell98 package can no longer be used together with base? Cheers, Simon