Safe Haskell | None |
---|---|
Language | Haskell98 |
Heterogeneous vectors.
- class Arity (Len xs) => Arity xs
- class Arity xs => ArityC c xs
- class Arity (Elems v) => HVector v where
- class Arity (ElemsF v) => HVectorF v where
- type family Wrap f a :: [β]
- data Proxy t :: k -> * = Proxy
- data ContVec xs
- asCVec :: ContVec xs -> ContVec xs
- convert :: (HVector v, HVector w, Elems v ~ Elems w) => v -> w
- head :: (HVector v, Elems v ~ (a : as), Arity as) => v -> a
- tail :: (HVector v, HVector w, (a : Elems w) ~ Elems v) => v -> w
- cons :: (HVector v, HVector w, Elems w ~ (a : Elems v)) => a -> v -> w
- concat :: (HVector v, HVector u, HVector w, Elems w ~ (Elems v ++ Elems u)) => v -> u -> w
- class Arity n => Index n xs where
- type ValueAt n xs :: *
- index :: (Index n (Elems v), HVector v) => v -> n -> ValueAt n (Elems v)
- set :: (Index n (Elems v), HVector v) => n -> ValueAt n (Elems v) -> v -> v
- element :: (Index n (Elems v), ValueAt n (Elems v) ~ a, HVector v, Functor f) => n -> (a -> f a) -> v -> f v
- elementCh :: (Index n (Elems v), a ~ ValueAt n (Elems v), HVector v, HVector w, Elems w ~ NewElems n (Elems v) b, Functor f) => n -> (a -> f b) -> v -> f w
- elementTy :: forall n a f v proxy. (Index (ToPeano n) (Elems v), ValueAt (ToPeano n) (Elems v) ~ a, NatIso (ToPeano n) n, HVector v, Functor f) => proxy n -> (a -> f a) -> v -> f v
- elementChTy :: forall a b f n v w proxy. (Index (ToPeano n) (Elems v), a ~ ValueAt (ToPeano n) (Elems v), HVector v, HVector w, Elems w ~ NewElems (ToPeano n) (Elems v) b, Functor f) => proxy n -> (a -> f b) -> v -> f w
- mk0 :: (HVector v, Elems v ~ []) => v
- mk1 :: (HVector v, Elems v ~ `[a]`) => a -> v
- mk2 :: (HVector v, Elems v ~ `[a, b]`) => a -> b -> v
- mk3 :: (HVector v, Elems v ~ `[a, b, c]`) => a -> b -> c -> v
- mk4 :: (HVector v, Elems v ~ `[a, b, c, d]`) => a -> b -> c -> d -> v
- mk5 :: (HVector v, Elems v ~ `[a, b, c, d, e]`) => a -> b -> c -> d -> e -> v
- fold :: HVector v => v -> Fn (Elems v) r -> r
- foldr :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> b -> b) -> b -> v -> b
- foldl :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => b -> a -> b) -> b -> v -> b
- mapM_ :: (HVector v, ArityC c (Elems v), Monad m) => Proxy c -> (forall a. c a => a -> m ()) -> v -> m ()
- unfoldr :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => b -> (a, b)) -> b -> v
- replicate :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall x. c x => x) -> v
- replicateM :: (HVector v, Monad m, ArityC c (Elems v)) => Proxy c -> (forall x. c x => m x) -> m v
- zipMono :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> a -> a) -> v -> v -> v
- zipMonoF :: (HVectorF v, ArityC c (ElemsF v)) => Proxy c -> (forall a. c a => f a -> f a -> f a) -> v f -> v f -> v f
- zipFold :: (HVector v, ArityC c (Elems v), Monoid m) => Proxy c -> (forall a. c a => a -> a -> m) -> v -> v -> m
- monomorphize :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> x) -> v -> ContVec (Len (Elems v)) x
- monomorphizeF :: (HVectorF v, ArityC c (ElemsF v)) => Proxy c -> (forall a. c a => f a -> x) -> v f -> ContVec (Len (ElemsF v)) x
- mapFunctor :: HVectorF v => (forall a. f a -> g a) -> v f -> v g
- sequence :: (Monad m, HVectorF v, HVector w, ElemsF v ~ Elems w) => v m -> m w
- sequenceA :: (Applicative f, HVectorF v, HVector w, ElemsF v ~ Elems w) => v f -> f w
- sequenceF :: (Monad m, HVectorF v) => v (m `Compose` f) -> m (v f)
- sequenceAF :: (Applicative f, HVectorF v) => v (f `Compose` g) -> f (v g)
- wrap :: (HVector v, HVectorF w, Elems v ~ ElemsF w) => (forall a. a -> f a) -> v -> w f
- unwrap :: (HVectorF v, HVector w, ElemsF v ~ Elems w) => (forall a. f a -> a) -> v f -> w
- distribute :: (Functor f, HVector v, HVectorF w, Elems v ~ ElemsF w) => f v -> w f
- distributeF :: (Functor f, HVectorF v) => f (v g) -> v (f `Compose` g)
- eq :: (HVector v, ArityC Eq (Elems v)) => v -> v -> Bool
- compare :: (HVector v, ArityC Ord (Elems v)) => v -> v -> Ordering
- rnf :: (HVector v, ArityC NFData (Elems v)) => v -> ()
HVector type classes
class Arity (Len xs) => Arity xs Source
Type class for dealing with N-ary function in generic way. Both
accum
and apply
work with accumulator data types which are
polymorphic. So it's only possible to write functions which
rearrange elements in vector using plain ADT. It's possible to
get around it by using GADT as accumulator (See ArityC
and
function which use it)
This is also somewhat a kitchen sink module. It contains witnesses which could be used to prove type equalities or to bring instance in scope.
class Arity (Elems v) => HVector v where Source
Type class for heterogeneous vectors. Instance should specify way to construct and deconstruct itself
Note that this type class is extremely generic. Almost any single constructor data type could be made instance. It could be monomorphic, it could be polymorphic in some or all fields it doesn't matter. Only law instance should obey is:
inspect v construct = v
Default implementation which uses Generic
is provided.
Nothing
construct :: Fun (Elems v) v Source
Function for constructing vector
inspect :: v -> Fun (Elems v) a -> a Source
Function for deconstruction of vector. It applies vector's elements to N-ary function.
HVector () | Unit is empty heterogeneous vector |
HVector (Complex a) | |
Arity xs => HVector (ContVec xs) | |
Arity xs => HVector (VecList xs) | |
Arity xs => HVector (HVec xs) | |
HVector (a, b) | |
(Storable a, HomArity n a) => HVector (Vec n a) | |
(Unbox n a, HomArity n a) => HVector (Vec n a) | |
(Prim a, HomArity n a) => HVector (Vec n a) | |
HomArity n a => HVector (Vec n a) | |
(Arity (Wrap * * f xs), Arity xs) => HVector (HVecF xs f) | It's not possible to remove constrain |
HVector (a, b, c) | |
HVector (a, b, c, d) | |
HVector (a, b, c, d, e) | |
HVector (a, b, c, d, e, f) | |
HVector (a, b, c, d, e, f, g) | |
HVector (a, b, c, d, e, f, g, h) | |
HVector (a, b, c, d, e, f, g, h, i) | |
HVector (a, b, c, d, e, f, g, h, i, j) | |
HVector (a, b, c, d, e, f, g, h, i, j, k) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z) | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a') | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a', b') | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a', b', c') | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a', b', c', d') | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a', b', c', d', e') | |
HVector (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a', b', c', d', e', f') |
class Arity (ElemsF v) => HVectorF v where Source
Type class for partially homogeneous vector where every element in the vector have same type constructor. Vector itself is parametrized by that constructor
data Proxy t :: k -> *
A concrete, poly-kinded proxy type
Monad (Proxy *) | |
Functor (Proxy *) | |
Applicative (Proxy *) | |
Vector (Proxy *) a | |
Bounded (Proxy k s) | |
Enum (Proxy k s) | |
Eq (Proxy k s) | |
Ord (Proxy k s) | |
Read (Proxy k s) | |
Show (Proxy k s) | |
Ix (Proxy k s) | |
Generic (Proxy * t) | |
Monoid (Proxy * s) | |
type Dim (Proxy *) = Z | |
type Rep (Proxy k t) = D1 D1Proxy (C1 C1_0Proxy U1) |
CPS-encoded heterogeneous vector.
asCVec :: ContVec xs -> ContVec xs Source
Restrict type of vector to ContVec
. This function is useful for
resolving type ambiguity when composing functions. For example
following code would not compile because intermediate type is
ambiguous:
cons 'a' . tail
GHC cannot guess what type should be produced by tail
. However
we can fix type of intermediate vector with asCVec
, so code
below will work just fine:
cons 'a' . asCVec . tail
Position based functions
convert :: (HVector v, HVector w, Elems v ~ Elems w) => v -> w Source
We can convert between any two vector which have same structure but different representations.
tail :: (HVector v, HVector w, (a : Elems w) ~ Elems v) => v -> w Source
Tail of the vector
>>>
case tail ('a',"aa",()) of x@(_,_) -> x
("aa",())
cons :: (HVector v, HVector w, Elems w ~ (a : Elems v)) => a -> v -> w Source
Prepend element to the list. Note that it changes type of vector so it either must be known from context of specified explicitly
concat :: (HVector v, HVector u, HVector w, Elems w ~ (Elems v ++ Elems u)) => v -> u -> w Source
Concatenate two vectors
Indexing
index :: (Index n (Elems v), HVector v) => v -> n -> ValueAt n (Elems v) Source
Index heterogeneous vector
set :: (Index n (Elems v), HVector v) => n -> ValueAt n (Elems v) -> v -> v Source
Set element in the vector
element :: (Index n (Elems v), ValueAt n (Elems v) ~ a, HVector v, Functor f) => n -> (a -> f a) -> v -> f v Source
Twan van Laarhoven's lens for i'th element.
elementCh :: (Index n (Elems v), a ~ ValueAt n (Elems v), HVector v, HVector w, Elems w ~ NewElems n (Elems v) b, Functor f) => n -> (a -> f b) -> v -> f w Source
Type changing Twan van Laarhoven's lens for i'th element.
elementTy :: forall n a f v proxy. (Index (ToPeano n) (Elems v), ValueAt (ToPeano n) (Elems v) ~ a, NatIso (ToPeano n) n, HVector v, Functor f) => proxy n -> (a -> f a) -> v -> f v Source
Twan van Laarhoven's lens for i'th element. GHC >= 7.8
elementChTy :: forall a b f n v w proxy. (Index (ToPeano n) (Elems v), a ~ ValueAt (ToPeano n) (Elems v), HVector v, HVector w, Elems w ~ NewElems (ToPeano n) (Elems v) b, Functor f) => proxy n -> (a -> f b) -> v -> f w Source
Type changing Twan van Laarhoven's lens for i'th element.
Generic constructors
Folds and unfolds
fold :: HVector v => v -> Fn (Elems v) r -> r Source
Most generic form of fold which doesn't constrain elements id use
of inspect
. Or in more convenient form below:
>>>
fold (12::Int,"Str") (\a s -> show a ++ s)
"12Str"
foldr :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> b -> b) -> b -> v -> b Source
Right fold over heterogeneous vector
foldl :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => b -> a -> b) -> b -> v -> b Source
Left fold over heterogeneous vector
mapM_ :: (HVector v, ArityC c (Elems v), Monad m) => Proxy c -> (forall a. c a => a -> m ()) -> v -> m () Source
Apply monadic action to every element in the vector
unfoldr :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => b -> (a, b)) -> b -> v Source
Unfold vector.
Polymorphic values
replicate :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall x. c x => x) -> v Source
Replicate polymorphic value n times. Concrete instance for every element is determined by their respective types.
>>>
import Data.Vector.HFixed as H
>>>
H.replicate (Proxy :: Proxy Monoid) mempty :: ((),String)
((),"")
replicateM :: (HVector v, Monad m, ArityC c (Elems v)) => Proxy c -> (forall x. c x => m x) -> m v Source
Replicate monadic action n times.
>>>
import Data.Vector.HFixed as H
>>>
H.replicateM (Proxy :: Proxy Read) (fmap read getLine) :: IO (Int,Char)
> 12 > 'a' (12,'a')
zipMono :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> a -> a) -> v -> v -> v Source
Zip two heterogeneous vectors
zipMonoF :: (HVectorF v, ArityC c (ElemsF v)) => Proxy c -> (forall a. c a => f a -> f a -> f a) -> v f -> v f -> v f Source
Zip two heterogeneous vectors
zipFold :: (HVector v, ArityC c (Elems v), Monoid m) => Proxy c -> (forall a. c a => a -> a -> m) -> v -> v -> m Source
monomorphize :: (HVector v, ArityC c (Elems v)) => Proxy c -> (forall a. c a => a -> x) -> v -> ContVec (Len (Elems v)) x Source
Convert heterogeneous vector to homogeneous
monomorphizeF :: (HVectorF v, ArityC c (ElemsF v)) => Proxy c -> (forall a. c a => f a -> x) -> v f -> ContVec (Len (ElemsF v)) x Source
Convert heterogeneous vector to homogeneous
Vector parametrized with type constructor
mapFunctor :: HVectorF v => (forall a. f a -> g a) -> v f -> v g Source
sequence :: (Monad m, HVectorF v, HVector w, ElemsF v ~ Elems w) => v m -> m w Source
Sequence effects for every element in the vector
sequenceA :: (Applicative f, HVectorF v, HVector w, ElemsF v ~ Elems w) => v f -> f w Source
Sequence effects for every element in the vector
sequenceF :: (Monad m, HVectorF v) => v (m `Compose` f) -> m (v f) Source
Sequence effects for every element in the vector
sequenceAF :: (Applicative f, HVectorF v) => v (f `Compose` g) -> f (v g) Source
Sequence effects for every element in the vector
wrap :: (HVector v, HVectorF w, Elems v ~ ElemsF w) => (forall a. a -> f a) -> v -> w f Source
Wrap every value in the vector into type constructor.
unwrap :: (HVectorF v, HVector w, ElemsF v ~ Elems w) => (forall a. f a -> a) -> v f -> w Source
Unwrap every value in the vector from the type constructor.
distribute :: (Functor f, HVector v, HVectorF w, Elems v ~ ElemsF w) => f v -> w f Source
Analog of distribute from Distributive type class.
distributeF :: (Functor f, HVectorF v) => f (v g) -> v (f `Compose` g) Source
Analog of distribute from Distributive type class.
Specialized operations
eq :: (HVector v, ArityC Eq (Elems v)) => v -> v -> Bool Source
Generic equality for heterogeneous vectors