On Fri, Mar 16, 2012 at 12:30:13PM +0100, Twan van Laarhoven wrote: > > If you want to avoid the side effects of boolTest2 when boolTest1 > returns true, you will need to implement a monadic or, something like > > orM ma mb = do > a <- ma > if a then return True else mb
Note also that it is *not possible* to have this short-circuiting behavior using only Applicative. The structure of an Applicative computation is always fixed up front, and cannot depend on intermediate values. -Brent _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe