On Thu, 14 Aug 2003, Wolfgang Jeltsch wrote:
> On Thursday, 2003-08-14, 17:05, CEST, Kevin S. Millikin wrote: > > On Wednesday, August 13, 2003 11:20 PM, Tn X-10n > > [SMTP:[EMAIL PROTECTED] wrote: > > > is it possible to convert IO Bool to Bool? > > > > Sure. Which Bool do you want? True? > > > > > toTrue :: IO Bool -> Bool > > > toTrue x = True > > > > Or False? > > > > > toFalse :: IO Bool -> Bool > > > toFalse x = False There's also boolFromIO :: IO Bool -> Bool boolFromIO = boolFromIO if you want to be even less useful :) > I wouldn't call these *conversion* functions because they don't look at their > argument. > > > Maybe that's not what you had in mind. > > Surely not. > > Wolfgang I'm surprise nobody has mentioned unsafePerformIO (:: IO a -> a). As the name suggests, it isn't referentially transparent. Are you sure you need a function of type IO Bool -> Bool? What are you trying to do? Brandon _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
