# codo-notation: A notation for comonads, analogous to the do-notation for monads.

A notation for comonads, analogous to the do-notation for monads.

Requires the `TemplateHaskell`

and `QuasiQuotes`

extensions.

Example 1:

{-# LANGUAGE TemplateHaskell #-} {-# LANGUAGE QuasiQuotes #-} import Control.Comonad import Language.Haskell.Codo foo :: (Comonad c, Num a) => c a -> a foo = [codo| x => extract x + 1 |]

Example 2:

import Data.Monoid instance Monoid Double where mempty = 0.0 mappend = (+) differentiate f = ((f 0.001) - f 0) / 0.001 minima :: (Double -> Double) -> Bool minima = [codo| f => f' <- differentiate f f'' <- differentiate f' (extract f' < 0.001) && (extract f'' > 0) |]

Further explanation of the syntax can be found in the following (short) paper: http://www.cl.cam.ac.uk/~dao29/drafts/codo-notation-orchard-ifl12.pdf with a numer of examples.

Further examples can be found here: https://github.com/dorchard/codo-notation.

## Downloads

- codo-notation-0.5.2.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)

#### Maintainer's Corner

For package maintainers and hackage trustees

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Versions [RSS] | 0.5, 0.5.2 |
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Dependencies | base (>=4.2 && <5), comonad (>=3), haskell-src-meta (>=0.5.1), parsec (>=3), template-haskell (>=2.7), uniplate (>=1.6) [details] |

License | BSD-3-Clause |

Author | Dominic Orchard <dom.orchard@gmail.com> |

Maintainer | Dominic Orchard <dom.orchard@gmail.com> |

Category | Language |

Source repo | head: git clone git://github.com/dorchard/codo-notation.git |

Uploaded | by DominicOrchard at 2012-11-22T20:04:19Z |

Distributions | NixOS:0.5.2 |

Reverse Dependencies | 1 direct, 0 indirect [details] |

Downloads | 2328 total (5 in the last 30 days) |

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Status | Docs uploaded by user Build status unknown [no reports yet] |