Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell98 |
Data.Accessor.Container
Description
This module allows to access elements of arrays, sets and finite maps like elements of records. This is especially useful for working with nested structures consisting of arrays, sets, maps and records.
Maybe we should move it to a separate package,
then we would not need to import array
and containers
package.
Synopsis
- array :: Ix i => i -> T (Array i e) e
- set :: Ord a => a -> T (Set a) Bool
- mapDefault :: Ord key => elem -> key -> T (Map key elem) elem
- mapMaybe :: Ord key => key -> T (Map key elem) (Maybe elem)
- intMapDefault :: elem -> Int -> T (IntMap elem) elem
- intMapMaybe :: Int -> T (IntMap elem) (Maybe elem)
Documentation
mapDefault :: Ord key => elem -> key -> T (Map key elem) elem Source #
Treats a finite map like an infinite map, where all undefined elements are replaced by a default value.
mapMaybe :: Ord key => key -> T (Map key elem) (Maybe elem) Source #
Treats a finite map like an infinite map,
where all undefined elements are Nothing
and defined elements are Just
.
intMapDefault :: elem -> Int -> T (IntMap elem) elem Source #
intMapMaybe :: Int -> T (IntMap elem) (Maybe elem) Source #