compute-isnumeric

Computes for each array element whether an element is numeric.

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isnumeric
!NPM versionnpm-imagenpm-url !Build Statustravis-imagetravis-url !Coverage Statuscoveralls-imagecoveralls-url !Dependenciesdependencies-imagedependencies-url
Computes for each array element whether an element is numeric.

Installation

$ npm install compute-isnumeric

For use in the browser, use browserify.

Usage

To use the module,
var isnumeric = require( 'compute-isnumeric' );

isnumeric( arr )

Computes for each array element whether an element is numeric. The function returns an array with length equal to that of the input array. Each output array element is either 0 or 1. A value of 1 means that an element is numeric and 0 means that an element is not numeric.
var out = isnumeric( [ 5, 1/0, 'beep', 3, 9, NaN, true ] );
// returns [ 1, 1, 0, 1, 1, 0, 0 ]

Examples

var isnumeric = require( 'compute-isnumeric' );

// Simulate some data...
var data = new Array( 100 ),
	len = data.length,
	rand;

// Every so often include a non-numeric value...
for ( var i = 0; i < len; i++ ) {
	rand = Math.random()*10;
	if ( rand < 0.5 ) {
		rand = null;
	}
	data[ i ] = rand;
}

var out = isnumeric( data );

// Count the number of numeric values detected...
var sum = 0;
for ( var i = 0; i < len; i++ ) {
	sum += out[ i ];
}

console.log( 'Count: %d', sum );

To run the example code from the top-level application directory,
$ node ./examples/index.js

Tests

Unit

Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,
$ make view-cov

License

MIT license.

Copyright

Copyright © 2014. Athan Reines.