diff options
Diffstat (limited to 'src/Data/Array/Nested/Internal.hs')
| -rw-r--r-- | src/Data/Array/Nested/Internal.hs | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/Data/Array/Nested/Internal.hs b/src/Data/Array/Nested/Internal.hs index d6808a0..8edf5be 100644 --- a/src/Data/Array/Nested/Internal.hs +++ b/src/Data/Array/Nested/Internal.hs @@ -780,6 +780,10 @@ ixCvtRX :: IxR n -> IxX (Replicate n Nothing) ixCvtRX IZR = IZX ixCvtRX (n ::: idx) = n ::? ixCvtRX idx +knownIxR :: IxR n -> Dict KnownINat n +knownIxR IZR = Dict +knownIxR (_ ::: idx) | Dict <- knownIxR idx = Dict + shapeSizeR :: IxR n -> Int shapeSizeR IZR = 1 shapeSizeR (n ::: sh) = n * shapeSizeR sh @@ -802,9 +806,10 @@ rindexPartial (Ranked arr) idx = -- | **WARNING**: All values returned from the function must have equal shape. -- See the documentation of 'mgenerate' for more details. -rgenerate :: forall n a. (KnownINat n, Elt a) => IxR n -> (IxR n -> a) -> Ranked n a +rgenerate :: forall n a. Elt a => IxR n -> (IxR n -> a) -> Ranked n a rgenerate sh f - | Dict <- lemKnownReplicate (Proxy @n) + | Dict <- knownIxR sh + , Dict <- lemKnownReplicate (Proxy @n) , Refl <- lemRankReplicate (Proxy @n) = Ranked (mgenerate (ixCvtRX sh) (f . ixCvtXR)) |