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Using the new Indexable definition we can strip many explicit signatu…
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…res from indexed types.
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@ekmett
ekmett committed Feb 21, 2013
1 parent c9466d3 commit b3c7e23
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20 changes: 10 additions & 10 deletions src/Control/Lens/Each.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -137,62 +137,62 @@ class (Functor f, Index s ~ Index t) => Each f s t a b | s -> a, t -> b, s b ->

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a) (b,b) a b@
instance (Applicative f, a~a', b~b') => Each f (a,a') (b,b') a b where
each f ~(a,b) = (,) <$> f' (0 :: Int) a <*> f' 1 b
each f ~(a,b) = (,) <$> f' 0 a <*> f' 1 b
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a) (b,b,b) a b@
instance (Applicative f, a~a2, a~a3, b~b2, b~b3) => Each f (a,a2,a3) (b,b2,b3) a b where
each f ~(a,b,c) = (,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c
each f ~(a,b,c) = (,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a) (b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, b~b2, b~b3, b~b4) => Each f (a,a2,a3,a4) (b,b2,b3,b4) a b where
each f ~(a,b,c,d) = (,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d
each f ~(a,b,c,d) = (,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a,a) (b,b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, a~a5, b~b2, b~b3, b~b4, b~b5) => Each f (a,a2,a3,a4,a5) (b,b2,b3,b4,b5) a b where
each f ~(a,b,c,d,e) = (,,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e
each f ~(a,b,c,d,e) = (,,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a,a,a) (b,b,b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, a~a5, a~a6, b~b2, b~b3, b~b4, b~b5, b~b6) => Each f (a,a2,a3,a4,a5,a6) (b,b2,b3,b4,b5,b6) a b where
each f ~(a,b,c,d,e,g) = (,,,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g
each f ~(a,b,c,d,e,g) = (,,,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a,a,a,a) (b,b,b,b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, a~a5, a~a6, a~a7, b~b2, b~b3, b~b4, b~b5, b~b6, b~b7) => Each f (a,a2,a3,a4,a5,a6,a7) (b,b2,b3,b4,b5,b6,b7) a b where
each f ~(a,b,c,d,e,g,h) = (,,,,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h
each f ~(a,b,c,d,e,g,h) = (,,,,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a,a,a,a,a) (b,b,b,b,b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, a~a5, a~a6, a~a7, a~a8, b~b2, b~b3, b~b4, b~b5, b~b6, b~b7, b~b8) => Each f (a,a2,a3,a4,a5,a6,a7,a8) (b,b2,b3,b4,b5,b6,b7,b8) a b where
each f ~(a,b,c,d,e,g,h,i) = (,,,,,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h <*> f' 7 i
each f ~(a,b,c,d,e,g,h,i) = (,,,,,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h <*> f' 7 i
where f' = Lens.indexed f
{-# INLINE each #-}

-- | @'each' :: 'IndexedTraversal' 'Int' (a,a,a,a,a,a,a,a,a) (b,b,b,b,b,b,b,b,b) a b@
instance (Applicative f, a~a2, a~a3, a~a4, a~a5, a~a6, a~a7, a~a8, a~a9, b~b2, b~b3, b~b4, b~b5, b~b6, b~b7, b~b8, b~b9) => Each f (a,a2,a3,a4,a5,a6,a7,a8,a9) (b,b2,b3,b4,b5,b6,b7,b8,b9) a b where
each f ~(a,b,c,d,e,g,h,i,j) = (,,,,,,,,) <$> f' (0 :: Int) a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h <*> f' 7 i <*> f' 8 j
each f ~(a,b,c,d,e,g,h,i,j) = (,,,,,,,,) <$> f' 0 a <*> f' 1 b <*> f' 2 c <*> f' 3 d <*> f' 4 e <*> f' 5 g <*> f' 6 h <*> f' 7 i <*> f' 8 j
where f' = Lens.indexed f
{-# INLINE each #-}

#if MIN_VERSION_base(4,4,0)
-- | @'each' :: ('RealFloat' a, 'RealFloat' b) => 'IndexedTraversal' 'Int' ('Complex' a) ('Complex' b) a b@
instance Applicative f => Each f (Complex a) (Complex b) a b where
each f (a :+ b) = (:+) <$> f' (0 :: Int) a <*> f' (1 :: Int) b
each f (a :+ b) = (:+) <$> f' 0 a <*> f' 1 b
where f' = Lens.indexed f
{-# INLINE each #-}
#else
-- | @'each' :: 'IndexedTraversal' 'Int' ('Complex' a) ('Complex' b) a b@
instance (Applicative f, RealFloat a, RealFloat b) => Each f (Complex a) (Complex b) a b where
each f (a :+ b) = (:+) <$> f' (0 :: Int) a <*> f' 1 b
each f (a :+ b) = (:+) <$> f' 0 a <*> f' 1 b
where f' = Lens.indexed f
{-# INLINE each #-}
#endif
Expand Down
91 changes: 46 additions & 45 deletions src/Control/Lens/Tuple.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -75,41 +75,42 @@ class Field1 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_1 :: IndexedLens Int s t a b

instance Field1 (Identity a) (Identity b) a b where
_1 f (Identity a) = Identity <$> indexed f (0 :: Int) a
_1 f (Identity a) = Identity <$> indexed f 0 a

-- | @
-- '_1' k ~(a,b) = (\\a' -> (a',b)) 'Data.Functor.<$>' k a
-- @
instance Field1 (a,b) (a',b) a a' where
_1 k ~(a,b) = indexed k (0 :: Int) a <&> \a' -> (a',b)
-- _1 k ~(a,b) = indexed k 0 a <&> \a' -> (a',b)
_1 k ~(a,b) = indexed k 0 a <&> \a' -> (a',b)
{-# INLINE _1 #-}

instance Field1 (a,b,c) (a',b,c) a a' where
_1 k ~(a,b,c) = indexed k (0 :: Int) a <&> \a' -> (a',b,c)
_1 k ~(a,b,c) = indexed k 0 a <&> \a' -> (a',b,c)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d) (a',b,c,d) a a' where
_1 k ~(a,b,c,d) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d)
_1 k ~(a,b,c,d) = indexed k 0 a <&> \a' -> (a',b,c,d)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d,e) (a',b,c,d,e) a a' where
_1 k ~(a,b,c,d,e) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d,e)
_1 k ~(a,b,c,d,e) = indexed k 0 a <&> \a' -> (a',b,c,d,e)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d,e,f) (a',b,c,d,e,f) a a' where
_1 k ~(a,b,c,d,e,f) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d,e,f)
_1 k ~(a,b,c,d,e,f) = indexed k 0 a <&> \a' -> (a',b,c,d,e,f)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d,e,f,g) (a',b,c,d,e,f,g) a a' where
_1 k ~(a,b,c,d,e,f,g) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d,e,f,g)
_1 k ~(a,b,c,d,e,f,g) = indexed k 0 a <&> \a' -> (a',b,c,d,e,f,g)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d,e,f,g,h) (a',b,c,d,e,f,g,h) a a' where
_1 k ~(a,b,c,d,e,f,g,h) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d,e,f,g,h)
_1 k ~(a,b,c,d,e,f,g,h) = indexed k 0 a <&> \a' -> (a',b,c,d,e,f,g,h)
{-# INLINE _1 #-}

instance Field1 (a,b,c,d,e,f,g,h,i) (a',b,c,d,e,f,g,h,i) a a' where
_1 k ~(a,b,c,d,e,f,g,h,i) = indexed k (0 :: Int) a <&> \a' -> (a',b,c,d,e,f,g,h,i)
_1 k ~(a,b,c,d,e,f,g,h,i) = indexed k 0 a <&> \a' -> (a',b,c,d,e,f,g,h,i)
{-# INLINE _1 #-}

-- | Provides access to the 2nd field of a tuple.
Expand Down Expand Up @@ -137,35 +138,35 @@ class Field2 s t a b | s -> a, t -> b, s b -> t, t a -> s where
-- '_2' k ~(a,b) = (\\b' -> (a,b')) 'Data.Functor.<$>' k b
-- @
instance Field2 (a,b) (a,b') b b' where
_2 k ~(a,b) = indexed k (1 :: Int) b <&> \b' -> (a,b')
_2 k ~(a,b) = indexed k 1 b <&> \b' -> (a,b')
{-# INLINE _2 #-}

instance Field2 (a,b,c) (a,b',c) b b' where
_2 k ~(a,b,c) = indexed k (1 :: Int) b <&> \b' -> (a,b',c)
_2 k ~(a,b,c) = indexed k 1 b <&> \b' -> (a,b',c)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d) (a,b',c,d) b b' where
_2 k ~(a,b,c,d) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d)
_2 k ~(a,b,c,d) = indexed k 1 b <&> \b' -> (a,b',c,d)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d,e) (a,b',c,d,e) b b' where
_2 k ~(a,b,c,d,e) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d,e)
_2 k ~(a,b,c,d,e) = indexed k 1 b <&> \b' -> (a,b',c,d,e)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d,e,f) (a,b',c,d,e,f) b b' where
_2 k ~(a,b,c,d,e,f) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d,e,f)
_2 k ~(a,b,c,d,e,f) = indexed k 1 b <&> \b' -> (a,b',c,d,e,f)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d,e,f,g) (a,b',c,d,e,f,g) b b' where
_2 k ~(a,b,c,d,e,f,g) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d,e,f,g)
_2 k ~(a,b,c,d,e,f,g) = indexed k 1 b <&> \b' -> (a,b',c,d,e,f,g)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d,e,f,g,h) (a,b',c,d,e,f,g,h) b b' where
_2 k ~(a,b,c,d,e,f,g,h) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d,e,f,g,h)
_2 k ~(a,b,c,d,e,f,g,h) = indexed k 1 b <&> \b' -> (a,b',c,d,e,f,g,h)
{-# INLINE _2 #-}

instance Field2 (a,b,c,d,e,f,g,h,i) (a,b',c,d,e,f,g,h,i) b b' where
_2 k ~(a,b,c,d,e,f,g,h,i) = indexed k (1 :: Int) b <&> \b' -> (a,b',c,d,e,f,g,h,i)
_2 k ~(a,b,c,d,e,f,g,h,i) = indexed k 1 b <&> \b' -> (a,b',c,d,e,f,g,h,i)
{-# INLINE _2 #-}

-- | Provides access to the 3rd field of a tuple.
Expand All @@ -174,31 +175,31 @@ class Field3 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_3 :: IndexedLens Int s t a b

instance Field3 (a,b,c) (a,b,c') c c' where
_3 k ~(a,b,c) = indexed k (2 :: Int) c <&> \c' -> (a,b,c')
_3 k ~(a,b,c) = indexed k 2 c <&> \c' -> (a,b,c')
{-# INLINE _3 #-}

instance Field3 (a,b,c,d) (a,b,c',d) c c' where
_3 k ~(a,b,c,d) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d)
_3 k ~(a,b,c,d) = indexed k 2 c <&> \c' -> (a,b,c',d)
{-# INLINE _3 #-}

instance Field3 (a,b,c,d,e) (a,b,c',d,e) c c' where
_3 k ~(a,b,c,d,e) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d,e)
_3 k ~(a,b,c,d,e) = indexed k 2 c <&> \c' -> (a,b,c',d,e)
{-# INLINE _3 #-}

instance Field3 (a,b,c,d,e,f) (a,b,c',d,e,f) c c' where
_3 k ~(a,b,c,d,e,f) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d,e,f)
_3 k ~(a,b,c,d,e,f) = indexed k 2 c <&> \c' -> (a,b,c',d,e,f)
{-# INLINE _3 #-}

instance Field3 (a,b,c,d,e,f,g) (a,b,c',d,e,f,g) c c' where
_3 k ~(a,b,c,d,e,f,g) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d,e,f,g)
_3 k ~(a,b,c,d,e,f,g) = indexed k 2 c <&> \c' -> (a,b,c',d,e,f,g)
{-# INLINE _3 #-}

instance Field3 (a,b,c,d,e,f,g,h) (a,b,c',d,e,f,g,h) c c' where
_3 k ~(a,b,c,d,e,f,g,h) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d,e,f,g,h)
_3 k ~(a,b,c,d,e,f,g,h) = indexed k 2 c <&> \c' -> (a,b,c',d,e,f,g,h)
{-# INLINE _3 #-}

instance Field3 (a,b,c,d,e,f,g,h,i) (a,b,c',d,e,f,g,h,i) c c' where
_3 k ~(a,b,c,d,e,f,g,h,i) = indexed k (2 :: Int) c <&> \c' -> (a,b,c',d,e,f,g,h,i)
_3 k ~(a,b,c,d,e,f,g,h,i) = indexed k 2 c <&> \c' -> (a,b,c',d,e,f,g,h,i)
{-# INLINE _3 #-}

-- | Provide access to the 4th field of a tuple.
Expand All @@ -207,27 +208,27 @@ class Field4 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_4 :: IndexedLens Int s t a b

instance Field4 (a,b,c,d) (a,b,c,d') d d' where
_4 k ~(a,b,c,d) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d')
_4 k ~(a,b,c,d) = indexed k 3 d <&> \d' -> (a,b,c,d')
{-# INLINE _4 #-}

instance Field4 (a,b,c,d,e) (a,b,c,d',e) d d' where
_4 k ~(a,b,c,d,e) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d',e)
_4 k ~(a,b,c,d,e) = indexed k 3 d <&> \d' -> (a,b,c,d',e)
{-# INLINE _4 #-}

instance Field4 (a,b,c,d,e,f) (a,b,c,d',e,f) d d' where
_4 k ~(a,b,c,d,e,f) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d',e,f)
_4 k ~(a,b,c,d,e,f) = indexed k 3 d <&> \d' -> (a,b,c,d',e,f)
{-# INLINE _4 #-}

instance Field4 (a,b,c,d,e,f,g) (a,b,c,d',e,f,g) d d' where
_4 k ~(a,b,c,d,e,f,g) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d',e,f,g)
_4 k ~(a,b,c,d,e,f,g) = indexed k 3 d <&> \d' -> (a,b,c,d',e,f,g)
{-# INLINE _4 #-}

instance Field4 (a,b,c,d,e,f,g,h) (a,b,c,d',e,f,g,h) d d' where
_4 k ~(a,b,c,d,e,f,g,h) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d',e,f,g,h)
_4 k ~(a,b,c,d,e,f,g,h) = indexed k 3 d <&> \d' -> (a,b,c,d',e,f,g,h)
{-# INLINE _4 #-}

instance Field4 (a,b,c,d,e,f,g,h,i) (a,b,c,d',e,f,g,h,i) d d' where
_4 k ~(a,b,c,d,e,f,g,h,i) = indexed k (3 :: Int) d <&> \d' -> (a,b,c,d',e,f,g,h,i)
_4 k ~(a,b,c,d,e,f,g,h,i) = indexed k 3 d <&> \d' -> (a,b,c,d',e,f,g,h,i)
{-# INLINE _4 #-}

-- | Provides access to the 5th field of a tuple.
Expand All @@ -236,23 +237,23 @@ class Field5 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_5 :: IndexedLens Int s t a b

instance Field5 (a,b,c,d,e) (a,b,c,d,e') e e' where
_5 k ~(a,b,c,d,e) = indexed k (4 :: Int) e <&> \e' -> (a,b,c,d,e')
_5 k ~(a,b,c,d,e) = indexed k 4 e <&> \e' -> (a,b,c,d,e')
{-# INLINE _5 #-}

instance Field5 (a,b,c,d,e,f) (a,b,c,d,e',f) e e' where
_5 k ~(a,b,c,d,e,f) = indexed k (4 :: Int) e <&> \e' -> (a,b,c,d,e',f)
_5 k ~(a,b,c,d,e,f) = indexed k 4 e <&> \e' -> (a,b,c,d,e',f)
{-# INLINE _5 #-}

instance Field5 (a,b,c,d,e,f,g) (a,b,c,d,e',f,g) e e' where
_5 k ~(a,b,c,d,e,f,g) = indexed k (4 :: Int) e <&> \e' -> (a,b,c,d,e',f,g)
_5 k ~(a,b,c,d,e,f,g) = indexed k 4 e <&> \e' -> (a,b,c,d,e',f,g)
{-# INLINE _5 #-}

instance Field5 (a,b,c,d,e,f,g,h) (a,b,c,d,e',f,g,h) e e' where
_5 k ~(a,b,c,d,e,f,g,h) = indexed k (4 :: Int) e <&> \e' -> (a,b,c,d,e',f,g,h)
_5 k ~(a,b,c,d,e,f,g,h) = indexed k 4 e <&> \e' -> (a,b,c,d,e',f,g,h)
{-# INLINE _5 #-}

instance Field5 (a,b,c,d,e,f,g,h,i) (a,b,c,d,e',f,g,h,i) e e' where
_5 k ~(a,b,c,d,e,f,g,h,i) = indexed k (4 :: Int) e <&> \e' -> (a,b,c,d,e',f,g,h,i)
_5 k ~(a,b,c,d,e,f,g,h,i) = indexed k 4 e <&> \e' -> (a,b,c,d,e',f,g,h,i)
{-# INLINE _5 #-}

-- | Provides access to the 6th element of a tuple.
Expand All @@ -261,19 +262,19 @@ class Field6 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_6 :: IndexedLens Int s t a b

instance Field6 (a,b,c,d,e,f) (a,b,c,d,e,f') f f' where
_6 k ~(a,b,c,d,e,f) = indexed k (5 :: Int) f <&> \f' -> (a,b,c,d,e,f')
_6 k ~(a,b,c,d,e,f) = indexed k 5 f <&> \f' -> (a,b,c,d,e,f')
{-# INLINE _6 #-}

instance Field6 (a,b,c,d,e,f,g) (a,b,c,d,e,f',g) f f' where
_6 k ~(a,b,c,d,e,f,g) = indexed k (5 :: Int) f <&> \f' -> (a,b,c,d,e,f',g)
_6 k ~(a,b,c,d,e,f,g) = indexed k 5 f <&> \f' -> (a,b,c,d,e,f',g)
{-# INLINE _6 #-}

instance Field6 (a,b,c,d,e,f,g,h) (a,b,c,d,e,f',g,h) f f' where
_6 k ~(a,b,c,d,e,f,g,h) = indexed k (5 :: Int) f <&> \f' -> (a,b,c,d,e,f',g,h)
_6 k ~(a,b,c,d,e,f,g,h) = indexed k 5 f <&> \f' -> (a,b,c,d,e,f',g,h)
{-# INLINE _6 #-}

instance Field6 (a,b,c,d,e,f,g,h,i) (a,b,c,d,e,f',g,h,i) f f' where
_6 k ~(a,b,c,d,e,f,g,h,i) = indexed k (5 :: Int) f <&> \f' -> (a,b,c,d,e,f',g,h,i)
_6 k ~(a,b,c,d,e,f,g,h,i) = indexed k 5 f <&> \f' -> (a,b,c,d,e,f',g,h,i)
{-# INLINE _6 #-}

-- | Provide access to the 7th field of a tuple.
Expand All @@ -282,15 +283,15 @@ class Field7 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_7 :: IndexedLens Int s t a b

instance Field7 (a,b,c,d,e,f,g) (a,b,c,d,e,f,g') g g' where
_7 k ~(a,b,c,d,e,f,g) = indexed k (6 :: Int) g <&> \g' -> (a,b,c,d,e,f,g')
_7 k ~(a,b,c,d,e,f,g) = indexed k 6 g <&> \g' -> (a,b,c,d,e,f,g')
{-# INLINE _7 #-}

instance Field7 (a,b,c,d,e,f,g,h) (a,b,c,d,e,f,g',h) g g' where
_7 k ~(a,b,c,d,e,f,g,h) = indexed k (6 :: Int) g <&> \g' -> (a,b,c,d,e,f,g',h)
_7 k ~(a,b,c,d,e,f,g,h) = indexed k 6 g <&> \g' -> (a,b,c,d,e,f,g',h)
{-# INLINE _7 #-}

instance Field7 (a,b,c,d,e,f,g,h,i) (a,b,c,d,e,f,g',h,i) g g' where
_7 k ~(a,b,c,d,e,f,g,h,i) = indexed k (6 :: Int) g <&> \g' -> (a,b,c,d,e,f,g',h,i)
_7 k ~(a,b,c,d,e,f,g,h,i) = indexed k 6 g <&> \g' -> (a,b,c,d,e,f,g',h,i)
{-# INLINE _7 #-}

-- | Provide access to the 8th field of a tuple.
Expand All @@ -299,11 +300,11 @@ class Field8 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_8 :: IndexedLens Int s t a b

instance Field8 (a,b,c,d,e,f,g,h) (a,b,c,d,e,f,g,h') h h' where
_8 k ~(a,b,c,d,e,f,g,h) = indexed k (7 :: Int) h <&> \h' -> (a,b,c,d,e,f,g,h')
_8 k ~(a,b,c,d,e,f,g,h) = indexed k 7 h <&> \h' -> (a,b,c,d,e,f,g,h')
{-# INLINE _8 #-}

instance Field8 (a,b,c,d,e,f,g,h,i) (a,b,c,d,e,f,g,h',i) h h' where
_8 k ~(a,b,c,d,e,f,g,h,i) = indexed k (7 :: Int) h <&> \h' -> (a,b,c,d,e,f,g,h',i)
_8 k ~(a,b,c,d,e,f,g,h,i) = indexed k 7 h <&> \h' -> (a,b,c,d,e,f,g,h',i)
{-# INLINE _8 #-}

-- | Provides access to the 9th field of a tuple.
Expand All @@ -312,5 +313,5 @@ class Field9 s t a b | s -> a, t -> b, s b -> t, t a -> s where
_9 :: IndexedLens Int s t a b

instance Field9 (a,b,c,d,e,f,g,h,i) (a,b,c,d,e,f,g,h,i') i i' where
_9 k ~(a,b,c,d,e,f,g,h,i) = indexed k (8 :: Int) i <&> \i' -> (a,b,c,d,e,f,g,h,i')
_9 k ~(a,b,c,d,e,f,g,h,i) = indexed k 8 i <&> \i' -> (a,b,c,d,e,f,g,h,i')
{-# INLINE _9 #-}

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