extensible-effects-2.0.1.0: An Alternative to Monad Transformers

Safe HaskellSafe
LanguageHaskell2010

Control.Eff.Operational.Example

Description

Example usage of Control.Eff.Operational.

Synopsis

Documentation

data Jail a where Source #

Define data using GADTs.

Constructors

Print :: String -> Jail () 
Scan :: Jail String 

prog :: Member (Program Jail) r => Eff r () Source #

adventIO :: SetMember Lift (Lift IO) r => Jail a -> Eff r a Source #

Then, implements interpreters from the data to effects.

adventPure :: (Member (Writer String) r, Member (State [String]) r) => Jail a -> Eff r a Source #