Hello,
Looking at Parsec 3 I see:
chainr1 :: (Stream s m t) = ParsecT s u m a -
ParsecT s u m (a - a - a) - ParsecT s u m a
chainr1 p op = scan where
scan = do x - p; rest x
rest x = (do f - op; y - scan; return (f x y)) | return x
But if I remove the type signature and let
2009/3/13 Martijn van Steenbergen mart...@van.steenbergen.nl:
Hello,
Looking at Parsec 3 I see:
chainr1 :: (Stream s m t) = ParsecT s u m a -
ParsecT s u m (a - a - a) - ParsecT s u m a
chainr1 p op = scan where
scan = do x - p; rest x
rest x = (do f - op; y - scan; return (f
On 2009 Mar 13, at 9:57, andy morris wrote:
(Currently the functions in Parsec have the more specific type as
Martijn says, but if they're generalised then I don't really see why
they need to be duplicated.)
Possibly so Parsec has decent performance on Haskell compilers that
don't do {-#
