[commit: packages/containers] changelog-foldtree, cleaned_bugfix394, master, merge-doc-target, merge-fixes-5.9, merge-restrict-fix-5.8, revert-184-generic, revert-408-bugfix_394: Remove redundant constraints (e024991)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/containers

On branches: changelog-foldtree,cleaned_bugfix394,master,merge-doc-target,merge-fixes-5.9,merge-restrict-fix-5.8,revert-184-generic,revert-408-bugfix_394
Link       : http://git.haskell.org/packages/containers.git/commitdiff/e02499103d1c4e95f5f57c7e6571f8e3040712ca

>---------------------------------------------------------------

commit e02499103d1c4e95f5f57c7e6571f8e3040712ca
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Wed Nov 25 08:45:50 2015 +0100

    Remove redundant constraints
    
    GHC HEAD warns about those:
    
    ```
    Data/Sequence.hs:432:12: warning:
        • Redundant constraint: Sized a
        • In the type signature for:
               squashL :: Sized a =>
                          Digit23 a -> Digit12 (Node a) -> Digit23 (Node a)
    
    Data/Sequence.hs:437:12: warning:
        • Redundant constraint: Sized a
        • In the type signature for:
               squashR :: Sized a =>
                          Digit12 (Node a) -> Digit23 a -> Digit23 (Node a)
    ```


>---------------------------------------------------------------

e02499103d1c4e95f5f57c7e6571f8e3040712ca
 Data/Sequence.hs | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/Data/Sequence.hs b/Data/Sequence.hs
index bb86c95..6b42841 100644
--- a/Data/Sequence.hs
+++ b/Data/Sequence.hs
@@ -357,8 +357,7 @@ type Digit23 a = Node a
 -- class, but as it is we have to build up 'map23' explicitly through the
 -- recursion.
 aptyMiddle
-  :: Sized c =>
-     (c -> d)
+  :: (c -> d)
      -> (c -> d)
      -> ((a -> b) -> c -> d)
      -> FingerTree (Elem (a -> b))
@@ -429,12 +428,12 @@ digit12ToDigit (One12 a) = One a
 digit12ToDigit (Two12 a b) = Two a b
 
 -- Squash the first argument down onto the left side of the second.
-squashL :: Sized a => Digit23 a -> Digit12 (Node a) -> Digit23 (Node a)
+squashL :: Digit23 a -> Digit12 (Node a) -> Digit23 (Node a)
 squashL m (One12 n) = node2 m n
 squashL m (Two12 n1 n2) = node3 m n1 n2
 
 -- Squash the second argument down onto the right side of the first
-squashR :: Sized a => Digit12 (Node a) -> Digit23 a -> Digit23 (Node a)
+squashR :: Digit12 (Node a) -> Digit23 a -> Digit23 (Node a)
 squashR (One12 n) m = node2 n m
 squashR (Two12 n1 n2) m = node3 n1 n2 m
 
@@ -965,7 +964,7 @@ cycleN n (Seq xsFT) = case rigidify xsFT of
                         (nodeToDigit sf)
 
 cycleNMiddle
-  :: Sized c => Int
+  :: Int
      -> Rigid c
      -> FingerTree (Node c)