A monad for time-dependant values, providing explicit effects for delayed computations, latency, etc.
Future(a, b) monad represents values that depend on time. This allows one
to model time-based effects explicitly, such that one can have full knowledge
of when they're dealing with delayed computations, latency, or anything that
can not be computed immediately.
A common use for this monad is to replace the usual Continuation-Passing Style form of programming, in order to be able to compose and sequence time-dependent effects using the generic and powerful monadic operations.
var Future = require'monads.future'returnvar request =if !/2\d\d/testthisstatus rejectthisresponseTextelse resolvethisresponseTextrequestopen"get" url truerequestsendvar t1 = get'/something'var t2 = get'/other'var t3 = t1mapt2mapreturn a + bt3chainconsole.loga
The easiest way is to grab it from NPM. If you're running in a Browser environment, you can use Browserify
$ npm install monads.future
If you're not using NPM, Download the latest release, and require
var Future = require'monads.future'
Download the latest release, and require the
Download the latest release, and load the
file. The properties are exposed in the global
$ git clone git://github.com/folktale/monads.future.git $ cd monads.future $ npm install $ make bundle
This will generate the
dist/monads.future.umd.js file, which you can load in
You can read the documentation online or build it yourself:
$ git clone git://github.com/folktale/monads.maybe.git $ cd monads.maybe $ npm install $ make documentation
Then open the file
docs/literate/index.html in your browser.
This library assumes an ES5 environment, but can be easily supported in ES3 platforms by the use of shims. Just include es5-shim :)
Copyright (c) 2013 Quildreen Motta.
Released under the MIT licence.