[Haskell-cafe] What is the consensus about -fwarn-unused-do-bind ?

Nicolas Pouillard nicolas.pouillard at gmail.com
Wed Apr 14 13:59:32 EDT 2010

On Wed, 14 Apr 2010 09:15:04 -0500, Antoine Latter <aslatter at gmail.com> wrote:
> On Tue, Apr 13, 2010 at 9:59 PM, Max Cantor <mxcantor at gmail.com> wrote:
> > I'm in the camp of adding -fno-warn-unused-do-bind to my cabal files.  I hate sacrificing the purity of -Wall but I have so many forkIOs in my code that I think it was the best option.
> >
> > Max
> >
> I think a nice compromise position would be the ability to annotate a
> function as "never trigger the unused do bind warning for me". That
> way I could catch these errors when I care, but also continue to
> ignore the return value of forkIO. I guess this doesn't help the
> space-leak argument for the warning, however.

What about defining forkIO_ as forkIO >> return (), this way there is no
ugly _ <- ... nor forgotten results?

Nicolas Pouillard

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