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The latest version of codo-notation is 0.5.2-0.

codo-notation

Version 0.5 revision 0 uploaded by DominicOrchard.

Package meta

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

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.

Author
Dominic Orchard <dom.orchard@gmail.com>
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Language
Copyright
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Homepage
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Maintainer
Dominic Orchard <dom.orchard@gmail.com>
Package URL
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Stability
experimental

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