mathjs/lib/type/matrix/utils/getArrayDataType.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';

function factory(type, config, load, typed) {
  var _typeof = load(require('../../../function/utils/typeof'));

  function getArrayDataType(array) {
    var _type; // to hold type info


    var _length = 0; // to hold length value to ensure it has consistent sizes

    for (var i = 0; i < array.length; i++) {
      var item = array[i];
      var isArray = Array.isArray(item); // Saving the target matrix row size

      if (i === 0 && isArray) {
        _length = item.length;
      } // If the current item is an array but the length does not equal the targetVectorSize


      if (isArray && item.length !== _length) {
        return undefined;
      }

      var itemType = isArray ? getArrayDataType(item) // recurse into a nested array
      : _typeof(item);

      if (_type === undefined) {
        _type = itemType; // first item
      } else if (_type !== itemType) {
        return 'mixed';
      } else {// we're good, everything has the same type so far
      }
    }

    return _type;
  }

  return getArrayDataType;
}
/**
 * Check the datatype of a given object
 * This is a low level implementation that should only be used by
 * parent Matrix classes such as SparseMatrix or DenseMatrix
 * This method does not validate Array Matrix shape
 * @param array
 * @return string
 */


exports.factory = factory;