'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createRow = void 0;

var _factory = require("../../utils/factory");

var _object = require("../../utils/object");

var _array = require("../../utils/array");

var name = 'row';
var dependencies = ['typed', 'Index', 'matrix', 'range'];
var createRow =
/* #__PURE__ */
(0, _factory.factory)(name, dependencies, function (_ref) {
  var typed = _ref.typed,
      Index = _ref.Index,
      matrix = _ref.matrix,
      range = _ref.range;

  /**
   * Return a row from a Matrix.
   *
   * Syntax:
   *
   *     math.row(value, index)
   *
   * Example:
   *
   *     // get a row
   *     const d = [[1, 2], [3, 4]]
   *     math.row(d, 1) // returns [3, 4]
   *
   * See also:
   *
   *     column
   *
   * @param {Array | Matrix } value   An array or matrix
   * @param {number} row              The index of the row
   * @return {Array | Matrix}         The retrieved row
   */
  var row = typed(name, {
    'Matrix, number': _row,
    'Array, number': function ArrayNumber(value, row) {
      return _row(matrix((0, _object.clone)(value)), row).valueOf();
    }
  });
  row.toTex = undefined; // use default template

  return row;
  /**
   * Retrieve a row of a matrix
   * @param {Matrix } value  A matrix
   * @param {number} row     The index of the row
   * @return {Matrix}        The retrieved row
   */

  function _row(value, row) {
    // check dimensions
    if (value.size().length !== 2) {
      throw new Error('Only two dimensional matrix is supported');
    }

    (0, _array.validateIndex)(row, value.size()[0]);
    var columnRange = range(0, value.size()[1]);
    var index = new Index(row, columnRange);
    return value.subset(index);
  }
});
exports.createRow = createRow;