Codensity for the Akh Javascript Monad Transformer Library

Includes both regular codensity monad Codensity and codensity monad transformer CodensityT.

# To use as standalone package
$ npm install --save akh.codensity

# To use as part of akh library
$ npm install --save akh

Usage

The codensity monad/transformer implements the Fantasy Land monad and monoid interfaces.

// Codensity monad
require('akh.codensity').Codensity
require('akh').Codensity

// Codensity monad transformer
require('akh.codensity').CodensityT
require('akh').CodensityT

Codensity.run(m, k), m.run(k)

Perform a codensity computation m and complete with outer continuation k.

const Codensity = requre('akh.Codensity').Codensity

var c = Codensity.of(3).map(x => -x)

Codensity.run(c, console.log) // logs: -3
c.run(console.log)

CodensityT.run(m, k), m.run(k)

Same as Codensity.run but for transformed types

Contributing

Contributions are welcome.

To get started:

$ cd akh-codensity
$ npm install # install dev packages
$ npm test # run tests

ChangeLog

0.0.3 - October 2, 2019

• Try fixing concat for CodensityT.

0.0.2 - September 2, 2016

• Small cleanups for merge with akh.

0.0.0 - August 31, 2016

• Initial release.