Data.IxSet.Typed.Ix

This module defines Typeable indexes and convenience functions. Should probably be considered private to Data.IxSet.Typed.

Documentation

data Ix ix a where

Ix is a Map from some key (of type ix) to a Set of values (of type a) for that key.

Constructors

Ix :: !(Map ix (Set a)) -> (a -> [ix]) -> Ix ix a

Instances

(NFData ix, NFData a) => NFData (Ix ix a)

MkIxList ixs ixs' a r => MkIxList (: * ix ixs) ixs' a (Ix ix a -> r)

insert :: (Ord a, Ord k) => k -> a -> Map k (Set a) -> Map k (Set a)

Convenience function for inserting into Maps of Sets as in the case of an Ix. If they key did not already exist in the Map, then a new Set is added transparently.

delete :: (Ord a, Ord k) => k -> a -> Map k (Set a) -> Map k (Set a)

Convenience function for deleting from Maps of Sets. If the resulting Set is empty, then the entry is removed from the Map.

fromList :: (Ord a, Ord k) => [(k, a)] -> Map k (Set a)

Helper function to create a new index from a list.

insertList :: (Ord a, Ord k) => [(k, a)] -> Map k (Set a) -> Map k (Set a)

Helper function to insert a list of elements into a set.

deleteList :: (Ord a, Ord k) => [(k, a)] -> Map k (Set a) -> Map k (Set a)

Helper function to delete a list of elements from a set.

union :: (Ord a, Ord k) => Map k (Set a) -> Map k (Set a) -> Map k (Set a)

Takes the union of two sets.

intersection :: (Ord a, Ord k) => Map k (Set a) -> Map k (Set a) -> Map k (Set a)

Takes the intersection of two sets.