countTruthy

Count the number of truthy elements in an array.

Installation

npm install @stdlib/array-base-count-truthy

Usage

var countTruthy = require( '@stdlib/array-base-count-truthy' );

countTruthy( x )

Counts the number of truthy elements in an array.

var x = [ 0, 1, 0, 1, 2 ];

var out = countTruthy( x );
// returns 3

Examples

var bernoulli = require( '@stdlib/random-array-bernoulli' );
var countTruthy = require( '@stdlib/array-base-count-truthy' );

var x = bernoulli( 100, 0.5, {
    'dtype': 'generic'
});
console.log( x );

var n = countTruthy( x );
console.log( n );

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.