|This module defines typable indices and convenience functions. Should
be probably considered private to Happstack.Data.IxSet.
|Ix is a Map from some Typeable key to a set of values for
that key. Ix carries type information inside.
|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.
|Convenience function for deleting from Maps of Sets If the
resulting Set is empty, then the entry is removed from the Map.
|Produced by Haddock version 2.6.1|