John Meacham schrieb: > On Fri, Apr 09, 2010 at 09:07:29AM -0700, Bryan O'Sullivan wrote: >> On Fri, Apr 9, 2010 at 6:44 AM, Ivan Lazar Miljenovic < >> ivan.miljeno...@gmail.com> wrote: >>> As of 6.12.1, the new -fwarn-unused-do-bind warning is activated with >>> -Wall. This is based off a bug report by Neil Mitchell: >>> http://hackage.haskell.org/trac/ghc/ticket/3263 . >>> >>> However, does it make sense for this to be turned on with -Wall? >> >> Personally, I find it to be tremendously noisy and unhelpful, and I always >> edit my .cabal files to turn it off. I think of it as a usability >> regression. > > I strongly agree. > > I do not even think it is bad style to ignore the result of a monad, > depending on the particular monad used, it could be extremely common. If > anything there should be a pragma one can attach to ceratin functions to > warn if the result is unused, like 'mapM'. This would be similar to what > gcc does, where you can specify an attribute saying a functions result > should be used or the compiler should complain.
The question is: Would people design libraries in a different way, if it is encouraged to respect monadic results? _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
