flow-exp

Transform stream factory to evaluate an exponential function for each numeric data value.

Installation

$ npm install flow-exp

API

To create a stream factory,

var expStream = require( 'flow-exp' );
 
// Create a new factory:
var eStream = expStream();

eStream.stream()

To create a new exponential stream,

var stream = eStream.stream();

Usage

Methods are chainable.

expStream()
    .stream()
    .pipe( /* writable stream */ );

Examples

var eventStream = require( 'event-stream' ),
    eStream = require( 'flow-exp' );
 
// Create some data...
var data = new Array( 1000 );
for ( var i = 0; i < data.length; i++ ) {
    data[ i ] = Math.round( Math.random() );
}
 
// Create a readable stream:
var readStream = eventStream.readArray( data );
 
// Create a new exponential stream:
var stream = eStream().stream();
 
// Pipe the data:
readStream.pipe( stream )
    .pipe( eventStream.map( function( d, clbk ) {
        clbk( null, d.toString()+'\n' );
    }))
    .pipe( process.stdout );

To run the example code from the top-level application directory,

$ node ./examples/index.js

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

MIT license.

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Copyright

Copyright © 2014. Athan Reines.