Sun, 14 Oct 2001 23:25:40 -0400, Ken Shan <ken@digitas.harvard.edu> pisze:

In Haskell's standard IO module, bracket_ is defined to have type

IO a -> (a -> IO b) -> IO c -> IO c

However, in the Exception module in hslibs, bracket_ has type

IO a -> IO b -> IO c -> IO c

which IMHO is much less useful, not to mention confusing.

Why less useful? There is already bracket which provides the value produced by initialization. IMHO Exception.bracket_ is more useful when there is really no initialization, only closing. -- __("< Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK