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(a -> b)
->
[a]
->
[b]
-base -xhtml +mtl
Packages
base
xhtml
mtl
local
:: MonadReader r m =>
(r -> r)
->
m a
->
m a
mtl
Control.Monad.Reader.Class
,
mtl
Control.Monad.Reader
censor
:: MonadWriter w m =>
(w -> w)
->
m a
->
m a
mtl
Control.Monad.Writer.Class
,
mtl
Control.Monad.Writer.Lazy
,
mtl
Control.Monad.Writer.Strict
censor
f m is an action that executes the action m and applies the function f to its output, leaving the return value unchanged. * f m =
pass
(
liftM
(\x -> > (x,f))