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-rw-r--r--libraries/base/Data/Monoid.hs3
1 files changed, 0 insertions, 3 deletions
diff --git a/libraries/base/Data/Monoid.hs b/libraries/base/Data/Monoid.hs
index c5a4d8bdf9..eff3836396 100644
--- a/libraries/base/Data/Monoid.hs
+++ b/libraries/base/Data/Monoid.hs
@@ -82,7 +82,6 @@ instance Applicative Dual where
(<*>) = coerce
instance Monad Dual where
- return = Dual
m >>= k = k (getDual m)
-- | The monoid of endomorphisms under composition.
@@ -126,7 +125,6 @@ instance Applicative Sum where
(<*>) = coerce
instance Monad Sum where
- return = Sum
m >>= k = k (getSum m)
-- | Monoid under multiplication.
@@ -146,7 +144,6 @@ instance Applicative Product where
(<*>) = coerce
instance Monad Product where
- return = Product
m >>= k = k (getProduct m)
-- $MaybeExamples