Computes for each array element whether an element is NaN.
$ npm install compute-isnanFor use in the browser, use browserify.
To use the module,
var isnan = require( 'compute-isnan' );Computes for each array element whether an element is NaN. 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 NaN and 0 means that an element is not NaN.
var out = isnan( [ 5, 'beep', 3, 9, true ] );
// returns [ 0, 1, 0, 0, 1 ]var isnan = require( 'compute-isnan' );
// Simulate some data...
var data = new Array( 100 ),
len = data.length,
rand;
// Division by `undefined` returns NaN...
for ( var i = 0; i < len; i++ ) {
rand = Math.random()*10;
if ( rand < 0.5 ) {
rand = undefined;
}
data[ i ] = 100 / rand;
}
var out = isnan( data );
// Count the number of NaNs 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.jsUnit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
$ make testAll new feature development should have corresponding unit tests to validate correct functionality.
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-covIstanbul creates a ./reports/coverage directory. To access an HTML version of the report,
$ make view-covCopyright © 2014. Athan Reines.