Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Vec.DataFamily.SpineStrict.Lens

Contents

Indexing
Conversions
Orphan instances

Synopsis

ix :: forall n f a. (SNatI n, Functor f) => Fin n -> LensLike' f (Vec n a) a
_Cons :: Iso (Vec ('S n) a) (Vec ('S n) b) (a, Vec n a) (b, Vec n b)
_head :: Lens' (Vec ('S n) a) a
_tail :: Lens' (Vec ('S n) a) (Vec n a)
_Pull :: SNatI n => Iso (Vec n a) (Vec n b) (Vec n a) (Vec n b)
_Vec :: SNatI n => Prism' [a] (Vec n a)

Indexing

ix :: forall n f a. (SNatI n, Functor f) => Fin n -> LensLike' f (Vec n a) a Source #

Index lens.

>>> ('a' ::: 'b' ::: 'c' ::: VNil) ^. ix (FS FZ)
'b'

>>> ('a' ::: 'b' ::: 'c' ::: VNil) & ix (FS FZ) .~ 'x'
'a' ::: 'x' ::: 'c' ::: VNil

_Cons :: Iso (Vec ('S n) a) (Vec ('S n) b) (a, Vec n a) (b, Vec n b) Source #

Match on non-empty Vec.

Note: lens _Cons is a ReifiedPrism. In fact, Vec n a cannot have an instance of Cons as types don't match.

_head :: Lens' (Vec ('S n) a) a Source #

Head lens. Note: lens _head is a Traversal'.

>>> ('a' ::: 'b' ::: 'c' ::: VNil) ^. _head
'a'

>>> ('a' ::: 'b' ::: 'c' ::: VNil) & _head .~ 'x'
'x' ::: 'b' ::: 'c' ::: VNil

_tail :: Lens' (Vec ('S n) a) (Vec n a) Source #

Head lens. Note: lens _head is a Traversal'.

Conversions

_Pull :: SNatI n => Iso (Vec n a) (Vec n b) (Vec n a) (Vec n b) Source #

An Iso from toPull and fromPull.

_Vec :: SNatI n => Prism' [a] (Vec n a) Source #

Prism from list.

>>> "foo" ^? _Vec :: Maybe (Vec N.Nat3 Char)
Just ('f' ::: 'o' ::: 'o' ::: VNil)

>>> "foo" ^? _Vec :: Maybe (Vec N.Nat2 Char)
Nothing

>>> _Vec # (True ::: False ::: VNil)
[True,False]

Orphan instances

SNatI n => Ixed (Vec n a) Source #	`Vec` doesn't have `At` instance, as we cannot remove value from `Vec`. See `ix` in Data.Vec.DataFamily.SpineStrict module for an `ReifiedLens` (not `ReifiedTraversal`).
Instance details Methods ix :: Index (Vec n a) -> Traversal' (Vec n a) (IxValue (Vec n a)) #
SNatI n => Each (Vec n a) (Vec n b) a b Source #
Instance details Methods each :: Traversal (Vec n a) (Vec n b) a b #
Field1 (Vec ('S n) a) (Vec ('S n) a) a a Source #
Instance details Methods _1 :: Lens (Vec ('S n) a) (Vec ('S n) a) a a #
Field2 (Vec ('S ('S n)) a) (Vec ('S ('S n)) a) a a Source #
Instance details Methods _2 :: Lens (Vec ('S ('S n)) a) (Vec ('S ('S n)) a) a a #
Field3 (Vec ('S ('S ('S n))) a) (Vec ('S ('S ('S n))) a) a a Source #
Instance details Methods _3 :: Lens (Vec ('S ('S ('S n))) a) (Vec ('S ('S ('S n))) a) a a #
Field4 (Vec ('S ('S ('S ('S n)))) a) (Vec ('S ('S ('S ('S n)))) a) a a Source #
Instance details Methods _4 :: Lens (Vec ('S ('S ('S ('S n)))) a) (Vec ('S ('S ('S ('S n)))) a) a a #
Field5 (Vec ('S ('S ('S ('S ('S n))))) a) (Vec ('S ('S ('S ('S ('S n))))) a) a a Source #
Instance details Methods _5 :: Lens (Vec ('S ('S ('S ('S ('S n))))) a) (Vec ('S ('S ('S ('S ('S n))))) a) a a #
Field6 (Vec ('S ('S ('S ('S ('S ('S n)))))) a) (Vec ('S ('S ('S ('S ('S ('S n)))))) a) a a Source #
Instance details Methods _6 :: Lens (Vec ('S ('S ('S ('S ('S ('S n)))))) a) (Vec ('S ('S ('S ('S ('S ('S n)))))) a) a a #
Field7 (Vec ('S ('S ('S ('S ('S ('S ('S n))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S n))))))) a) a a Source #
Instance details Methods _7 :: Lens (Vec ('S ('S ('S ('S ('S ('S ('S n))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S n))))))) a) a a #
Field8 (Vec ('S ('S ('S ('S ('S ('S ('S ('S n)))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S ('S n)))))))) a) a a Source #
Instance details Methods _8 :: Lens (Vec ('S ('S ('S ('S ('S ('S ('S ('S n)))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S ('S n)))))))) a) a a #
Field9 (Vec ('S ('S ('S ('S ('S ('S ('S ('S ('S n))))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S ('S ('S n))))))))) a) a a Source #
Instance details Methods _9 :: Lens (Vec ('S ('S ('S ('S ('S ('S ('S ('S ('S n))))))))) a) (Vec ('S ('S ('S ('S ('S ('S ('S ('S ('S n))))))))) a) a a #