| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Data.Vector.Optics
Description
This module provides lenses and traversals for working with vectors.
Documentation
Isomorphisms
vector :: Iso [a] [b] (Vector a) (Vector b) Source #
Convert a list to a Vector (or back)
>>>[1,2,3] ^. vector == Vector.fromList [1,2,3]True
>>>[1,2,3] ^. vector % re vector[1,2,3]
>>>Vector.fromList [0,8,15] ^. re vector % vector == Vector.fromList [0,8,15]True
forced :: Iso (Vector a) (Vector b) (Vector a) (Vector b) Source #
Convert a Vector to a version that doesn't retain any extra
memory.
Lenses
sliced i n provides a Lens that edits the n elements starting at
index i from a Lens.
This is only a valid Lens if you do not change the length of the resulting
Vector.
Attempting to return a longer or shorter vector will result in violations of
the Lens laws.
>>>Vector.fromList [1..10] ^. sliced 2 5 == Vector.fromList [3,4,5,6,7]True
>>>(Vector.fromList [1..10] & sliced 2 5 % mapped .~ 0) == Vector.fromList [1,2,0,0,0,0,0,8,9,10]True