Re: Proposal: die to System.Exit (and/or Prelude)

On 16 December 2013 22:15, Roman Cheplyaka wrote:

* Herbert Valerio Riedel [2013-12-16 10:53:21+0100]

...

Why not simply use the existing `fail :: String -> IO a` method instead?

The purpose of 'fail' is to handle monadic pattern-match failures. I consider explicit use of 'fail' in user code a hack.

Or for use with parser-combinator libraries (though I suppose this could be seen as a pattern-match failure...)?

Roman

_______________________________________________ Libraries mailing list Libraries@haskell.org http://www.haskell.org/mailman/listinfo/libraries

-- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com http://IvanMiljenovic.wordpress.com