The latest version of open-typerep is 0.6.1-0.
open-typerep
Version 0.2 revision 0 uploaded by EmilAxelsson.
Package meta
- Synopsis
- Open type representations and dynamic types
- Description
This package uses Data Types à la Carte to provide open type representations and dynamic types/coercions for open type universes.
Example 1 (dynamic types):
type MyUniverse = IntType :+: BoolType hlist :: [Dynamic MyUniverse] hlist = [toDyn True, toDyn (1 :: Int)]*Main> hlist [True,1]Note that if we were using Data.Dynamic, it would just print
[<<Bool>>,<<Int>>]Example 2 (dynamically typed addition):
addDyn :: (TypeEq ts ts, PWitness Num ts ts) => Dynamic ts -> Dynamic ts -> Maybe (Dynamic ts) addDyn (Dyn ta a) (Dyn tb b) = do Dict <- typeEq ta tb Dict <- pwit pNum ta return (Dyn ta (a+b))Data.Dynamic could only do this monomorphically, for one Num type at a time.
- Author
- Emil Axelsson
- Bug reports
- https://github.com/emilaxelsson/open-typerep/issues
- Category
- Dependent Types
- Copyright
- Copyright (c) 2014, Emil Axelsson
- Homepage
- https://github.com/emilaxelsson/open-typerep
- Maintainer
- emax@chalmers.se
- Package URL
- n/a
- Stability
- experimental