Modulelens-5.3.5Haskell2010
Data.Vector.Generic.Lens
This module provides lenses and traversals for working with generic vectors.
- 11 values
- Packagelens-5.3.5
- Exports11
- LanguageHaskell2010
- LicenceBSD-2-Clause
- SourceLens.hs
Isomorphisms
6 declarationsConvert a Vector to a version that doesn't retain any extra memory.
Convert a list to a Vector (or back.)
([1,2,3] ^. vector :: Vector.Vector Int) == Vector.fromList [1,2,3]True
Vector.fromList [0,8,15] ^. from vector[0,8,15]
Different vector implementations are isomorphic to each other.
Lenses
1 declarationsliced 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
Traversal of individual indices
3 declarationsThis Traversal will ignore any duplicates in the supplied list of indices.
toListOf (ordinals [1,3,2,5,9,10]) $ Vector.fromList [2,4..40][4,8,6,12,20,22]
Like ix but polymorphic in the vector type.
Indexed vector traversal for a generic vector.