diff options
Diffstat (limited to 'src/Data/Array')
| -rw-r--r-- | src/Data/Array/Nested/Internal/Shaped.hs | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/Data/Array/Nested/Internal/Shaped.hs b/src/Data/Array/Nested/Internal/Shaped.hs index 2a8c206..f8df5aa 100644 --- a/src/Data/Array/Nested/Internal/Shaped.hs +++ b/src/Data/Array/Nested/Internal/Shaped.hs @@ -488,8 +488,8 @@ stoMixed (Shaped arr) = arr -- compatibility check. scastToMixed :: forall sh sh' a. (Elt a, Rank sh ~ Rank sh') => IShX sh' -> Shaped sh a -> Mixed sh' a -scastToMixed shx (Shaped arr) = - case shxEqual shx (mshape arr) of - Just Refl -> arr - Nothing -> error $ "scastToMixed: Given shape (" ++ show shx ++ ") is not equal to " ++ - "the shape of the array (" ++ show (mshape arr) ++ ")" +scastToMixed shx sarr@(Shaped arr) + | Refl <- lemAppNil @sh' + , Refl <- lemAppNil @(MapJust sh) + , Refl <- lemRankMapJust (sshape sarr) + = mcast (ssxFromShape (mshape arr)) shx (Proxy @'[]) arr |