mathjs/src/utils/collection/deepForEach.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

'use strict'

const isMatrix = require('./isMatrix')

/**
 * Recursively loop over all elements in a given multi dimensional array
 * and invoke the callback on each of the elements.
 * @param {Array | Matrix} array
 * @param {Function} callback     The callback method is invoked with one
 *                                parameter: the current element in the array
 */
module.exports = function deepForEach (array, callback) {
  if (isMatrix(array)) {
    array = array.valueOf()
  }

  for (let i = 0, ii = array.length; i < ii; i++) {
    const value = array[i]

    if (Array.isArray(value)) {
      deepForEach(value, callback)
    } else {
      callback(value)
    }
  }
}