array/zipObject.js

define(['../lang/isArray'], function(isArray) {

  /**
   * Creates an object composed from arrays of property names and values. Provide
   * either a single two dimensional array, e.g. `[[key1, value1], [key2, value2]]`
   * or two arrays, one of property names and one of corresponding values.
   *
   * @static
   * @memberOf _
   * @alias object
   * @category Array
   * @param {Array} props The property names.
   * @param {Array} [values=[]] The property values.
   * @returns {Object} Returns the new object.
   * @example
   *
   * _.zipObject(['fred', 'barney'], [30, 40]);
   * // => { 'fred': 30, 'barney': 40 }
   */
  function zipObject(props, values) {
    var index = -1,
        length = props ? props.length : 0,
        result = {};

    if (length && !values && !isArray(props[0])) {
      values = [];
    }
    while (++index < length) {
      var key = props[index];
      if (values) {
        result[key] = values[index];
      } else if (key) {
        result[key[0]] = key[1];
      }
    }
    return result;
  }

  return zipObject;
});