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amalloy/signal.hs

Created February 13, 2018 19:17
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signal.hs
instance Monad Signal where
return = pure
(Signal s) >>= f = Signal $ \t -> let Signal s' = f (s t)
in s' t
-- or, equivalently but less readably:
-- s >>= f = Signal $ join (func . f . func s)
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