Frames.Streamly.InCore

This module can be used in-place of Frames.InCore. The pipes functions are all replaced by equivalent streamly functions. Relevant classes and type-families are re-exported for convenience.

Documentation

inCoreSoA :: forall m rs. (PrimMonad m, RecVec rs) => SerialT m (Record rs) -> m (Int, Rec ((->) Int :. ElField) rs)

Perform the inCoreSoA_F fold on a stream of records.

inCoreAoS :: forall m rs. (PrimMonad m, RecVec rs) => SerialT m (Record rs) -> m (FrameRec rs)

Perform the inCoreAoS_F fold on a stream of records.

inCoreAoS' :: forall ss rs m. (PrimMonad m, RecVec rs) => (Rec ((->) Int :. ElField) rs -> Rec ((->) Int :. ElField) ss) -> SerialT m (Record rs) -> m (FrameRec ss)

Perform the more general AoS fold on a stream of records.

inCoreSoA_F :: forall m rs. (PrimMonad m, RecVec rs) => Fold m (Record rs) (Int, Rec ((->) Int :. ElField) rs)

Fold a stream of Vinyl records into SoA (Structure-of-Arrays) form. Here as a streamly fold, so it may be deployed along with other folds or on only part of a stream.

inCoreAoS_F :: forall m rs. (PrimMonad m, RecVec rs) => Fold m (Record rs) (FrameRec rs)

Fold a stream of Vinyl records into AoS (Array-of-Structures) form.

inCoreAoS'_F :: forall ss rs m. (PrimMonad m, RecVec rs) => (Rec ((->) Int :. ElField) rs -> Rec ((->) Int :. ElField) ss) -> Fold m (Record rs) (FrameRec ss)

More general AoS fold, allowing for a, possible column changing, transformation of the records while in SoA form.

Re-exports from Frames

toAoS :: forall (rs :: [(Symbol, Type)]). Int -> Rec (((->) Int :: Type -> Type) :. ElField) rs -> FrameRec rs

Convert a structure-of-arrays to an array-of-structures. This can simplify usage of an in-memory representation.

type family VectorFor t :: Type -> Type

The most efficient vector type for each column data type.

Instances

type VectorFor Bool

Defined in Frames.InCore

type VectorFor Bool = Vector

type VectorFor Double

Defined in Frames.InCore

type VectorFor Double = Vector

type VectorFor Float

Defined in Frames.InCore

type VectorFor Float = Vector

type VectorFor Int

Defined in Frames.InCore

type VectorFor Int = Vector

type VectorFor String

Defined in Frames.InCore

type VectorFor String = Vector

type VectorFor Text

Defined in Frames.InCore

type VectorFor Text = Vector

type VectorMFor a = Mutable (VectorFor a)

The mutable version of VectorFor a particular type.

type family VectorMs (m :: Type -> Type) (rs :: [(Symbol, Type)]) :: [(Symbol, Type)] where ...

Mutable vector types for each column in a row.

Equations

VectorMs m ('[] :: [(Symbol, Type)]) = '[] :: [(Symbol, Type)]

VectorMs m ((s :-> a) ': rs) = (s :-> VectorMFor a (PrimState m) a) ': VectorMs m rs

type family Vectors (rs :: [(Symbol, Type)]) :: [(Symbol, Type)] where ...

Immutable vector types for each column in a row.

Equations

Vectors ('[] :: [(Symbol, Type)]) = '[] :: [(Symbol, Type)]

Vectors ((s :-> a) ': rs) = (s :-> VectorFor a a) ': Vectors rs

class RecVec (rs :: [(Symbol, Type)]) where

Tooling to allocate, grow, write to, freeze, and index into records of vectors.

Methods

allocRec :: PrimMonad m => proxy rs -> Int -> m (Record (VectorMs m rs))

freezeRec :: PrimMonad m => proxy rs -> Int -> Record (VectorMs m rs) -> m (Record (Vectors rs))

growRec :: PrimMonad m => proxy rs -> Record (VectorMs m rs) -> m (Record (VectorMs m rs))

writeRec :: PrimMonad m => proxy rs -> Int -> Record (VectorMs m rs) -> Record rs -> m ()

indexRec :: proxy rs -> Int -> Record (Vectors rs) -> Record rs

produceRec :: proxy rs -> Record (Vectors rs) -> Rec (((->) Int :: Type -> Type) :. ElField) rs

Instances

RecVec ('[] :: [(Symbol, Type)])

Defined in Frames.InCore

Methods

allocRec :: PrimMonad m => proxy '[] -> Int -> m (Record (VectorMs m '[]))

freezeRec :: PrimMonad m => proxy '[] -> Int -> Record (VectorMs m '[]) -> m (Record (Vectors '[]))

growRec :: PrimMonad m => proxy '[] -> Record (VectorMs m '[]) -> m (Record (VectorMs m '[]))

writeRec :: PrimMonad m => proxy '[] -> Int -> Record (VectorMs m '[]) -> Record '[] -> m ()

indexRec :: proxy '[] -> Int -> Record (Vectors '[]) -> Record '[]

produceRec :: proxy '[] -> Record (Vectors '[]) -> Rec ((->) Int :. ElField) '[]

(MVector (VectorMFor a) a, Vector (VectorFor a) a, KnownSymbol s, RecVec rs) => RecVec ((s :-> a) ': rs)

Defined in Frames.InCore

Methods

allocRec :: PrimMonad m => proxy ((s :-> a) ': rs) -> Int -> m (Record (VectorMs m ((s :-> a) ': rs)))

freezeRec :: PrimMonad m => proxy ((s :-> a) ': rs) -> Int -> Record (VectorMs m ((s :-> a) ': rs)) -> m (Record (Vectors ((s :-> a) ': rs)))

growRec :: PrimMonad m => proxy ((s :-> a) ': rs) -> Record (VectorMs m ((s :-> a) ': rs)) -> m (Record (VectorMs m ((s :-> a) ': rs)))

writeRec :: PrimMonad m => proxy ((s :-> a) ': rs) -> Int -> Record (VectorMs m ((s :-> a) ': rs)) -> Record ((s :-> a) ': rs) -> m ()

indexRec :: proxy ((s :-> a) ': rs) -> Int -> Record (Vectors ((s :-> a) ': rs)) -> Record ((s :-> a) ': rs)

produceRec :: proxy ((s :-> a) ': rs) -> Record (Vectors ((s :-> a) ': rs)) -> Rec ((->) Int :. ElField) ((s :-> a) ': rs)