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jmikkola/defeat_type_inference.hs

Created November 16, 2015 01:49
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defeat_type_inference.hs
data CrazyList a = CL a (CrazyList [a]) | End
-- Try compiling this without either type annotation:
f :: CrazyList a -> Int
f End = 0
f (CL x rest) = g x rest
g :: a -> CrazyList [a] -> Int
g x rest = 1 + (f rest)
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