This module provides various helpful utilities for dealing with Data.Maps.
Written by John Goerzen, email@example.com
|flipM :: (Ord key, Ord val) => Map key val -> Map val [key]|
|Flips a Map. See flipAL for more on the similar function for lists.|
|flippedLookupM :: (Ord val, Ord key) => val -> Map key val -> [key]|
|Returns a list of all keys in the Map whose value matches the parameter. If the value does not occur in the Map, the empty list is returned.|
|forceLookupM :: (Show key, Ord key) => String -> key -> Map key elt -> elt|
|Performs a lookup, and raises an exception (with an error message prepended with the given string) if the key could not be found.|
|strToM :: (Read a, Read b, Ord a) => String -> Map a b|
Converts a String into a String, String Map. See strToAL for more on the similar function for association lists.
This implementation is simple:
strToM = Data.Map.fromList . strToAL
This function is designed to work with Map String String objects, but may work with other key/value combinations if they have simple representations.
|strFromM :: (Show a, Show b, Ord a) => Map a b -> String|
Converts a String, String Map into a string representation. See strFromAL for more on the similar function for association lists. This implementation is simple:
strFromM = strFromAL . Data.Map.toList
This function is designed to work with Map String String objects, but may also work with other objects with simple representations.
|Produced by Haddock version 0.8|