flow-csum
Transform stream factory to calculate the cumulative sum of a numeric data stream.
Installation
$ npm install flow-csum
API
To create a stream factory,
var sumStream = ;// Create a new factory:var sStream = ;
sStream.sum( [value] )
This method is a setter/getter. If no value
is provided, returns the initial sum value
. To set the initial sum,
sStream;
sStream.stream()
To create a new sum stream,
var stream = sStream;
Usage
Methods are chainable,
;
Examples
var eventStream =sStream = ;// Create some data...var data = 1000 ;for var i = 0; i < 1000; i++data i = Math;// Create a readable stream:var readStream = eventStream;// Create a new sum stream:var stream = ;// Pipe the data:readStream;
Tests
Unit tests use the Mocha test framework with Chai assertions.
Assuming you have installed Mocha, execute the following command in the top-level application directory to run the tests:
$ mocha
All new feature development should have corresponding unit tests to validate correct functionality.
License
Copyright
Copyright © 2014. Athan Reines.