HMap-1.3.0: Fast heterogeneous maps and unconstrained typeable-like functionality.

Copyright(c) Atze van der Ploeg 2013
LicenseBSD-style
Maintainer[email protected]
Stabilityprovisional
Portabilityportable
Safe HaskellNone
LanguageHaskell98

Data.Untypeable

Description

Provides a Typeable-like interface for things that cannot derive typeable.

Synopsis

Documentation

data Untypeable Source #

inject :: HKey s a -> a -> Untypeable Source #

Make an Untypeable value

project :: HKey s a -> Untypeable -> Maybe a Source #

Project (i.e. cast) an untypeable value with a given key.