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| author | Mikolaj Konarski <mikolaj.konarski@funktory.com> | 2025-12-02 05:38:41 +0100 |
|---|---|---|
| committer | Mikolaj Konarski <mikolaj.konarski@funktory.com> | 2025-12-02 05:38:41 +0100 |
| commit | ba5a31c976f80421464af1af8d6ab1e2a154cd83 (patch) | |
| tree | 526de2796e98cd238e1dcefc53894780376577e2 /src/Data/Array/Nested/Ranked.hs | |
| parent | 88828bd004ccba13e227f732106ab30c3731837f (diff) | |
Define mgeneratePrim as a fast special case variant
Diffstat (limited to 'src/Data/Array/Nested/Ranked.hs')
| -rw-r--r-- | src/Data/Array/Nested/Ranked.hs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/Data/Array/Nested/Ranked.hs b/src/Data/Array/Nested/Ranked.hs index bf35cc4..9504247 100644 --- a/src/Data/Array/Nested/Ranked.hs +++ b/src/Data/Array/Nested/Ranked.hs @@ -69,6 +69,15 @@ rgenerate sh f , Refl <- lemRankReplicate sn = Ranked (mgenerate (shxFromShR sh) (f . ixrFromIxX)) +-- TODO: this would be shorter and faster written with rfromVector, +-- but unfortunately we don't have ixrFromLinear +rgeneratePrim :: forall n a. PrimElt a => IShR n -> (IIxR n -> a) -> Ranked n a +rgeneratePrim sh f + | sn@SNat <- shrRank sh + , Dict <- lemKnownReplicate sn + , Refl <- lemRankReplicate sn + = Ranked (mgeneratePrim (shxFromShR sh) (f . ixrFromIxX)) + -- | See the documentation of 'mlift'. rlift :: forall n1 n2 a. Elt a => SNat n2 |