About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
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Count the number of elements in an array that are equal to a specified value.
npm install @stdlib/array-base-count-same-value-zerovar countSameValueZero = require( '@stdlib/array-base-count-same-value-zero' );Counts the number of elements in an array that are equal to a specified value.
var x = [ 0, 1, 0, 1, 2 ];
var out = countSameValueZero( x, 1 );
// returns 2In contrast to an implementation using the strict equality operator ===, the function treats NaNs as the same value.
var x = [ NaN, NaN, NaN ];
var out = countSameValueZero( x, NaN );
// returns 3In contrast to an implementation using the SameValue Algorithm (as specified in ECMAScript 5), the function does not distinguish between +0 and -0.
var x = [ 0.0, -0.0, 0.0 ];
var out = countSameValueZero( x, 0.0 );
// returns 3var bernoulli = require( '@stdlib/random-array-bernoulli' );
var countSameValueZero = require( '@stdlib/array-base-count-same-value-zero' );
var x = bernoulli( 10, 0.5, {
'dtype': 'generic'
});
console.log( x );
var n = countSameValueZero( x, 1 );
console.log( n );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.
See LICENSE.
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