| Portability | non-portable (rank-2 polymorphism) |
|---|---|
| Stability | experimental |
| Maintainer | Edward Kmett <ekmett@gmail.com> |
Control.Functor.KanExtension.Interpreter
Description
Ghani and Johann's Interp/InterpT types from ''Initial Algebra Semantics is Enough!'' http://crab.rutgers.edu/~pjohann/tlca07-rev.pdf and its dual.
Documentation
type Interpreter y g h = y :~> Ran g hSource
type InterpreterT f g h = forall y. Functor y => Interpreter y g h -> Interpreter (f y) g hSource
interpreterAlgebra :: InterpreterT f g h -> HAlgebra f (Ran g h)Source
algebraInterpreter :: HFunctor f => HAlgebra f (Ran g h) -> InterpreterT f g hSource
type Cointerpreter y g h = Lan g h :~> ySource
type CointerpreterT f g h = forall y. Functor y => Cointerpreter y g h -> Cointerpreter (f y) g hSource
cointerpreterCoalgebra :: CointerpreterT f g h -> HCoalgebra f (Lan g h)Source
coalgebraCointerpreter :: HFunctor f => HCoalgebra f (Lan g h) -> CointerpreterT f g hSource