text: var restParam = require('../function/restParam'),
      unzipWith = require('./unzipWith');
  
  /**
   * This method is like `_.zip` except that it accepts an iteratee to specify
   * how grouped values should be combined. The `iteratee` is bound to `thisArg`
   * and invoked with four arguments: (accumulator, value, index, group).
   *
   * @static
   * @memberOf _
   * @category Array
   * @param {...Array} [arrays] The arrays to process.
   * @param {Function} [iteratee] The function to combine grouped values.
   * @param {*} [thisArg] The `this` binding of `iteratee`.
   * @returns {Array} Returns the new array of grouped elements.
   * @example
   *
   * _.zipWith([1, 2], [10, 20], [100, 200], _.add);
   * // => [111, 222]
   */
  var zipWith = restParam(function (arrays) {
      var length = arrays.length,
          iteratee = length > 2 ? arrays[length - 2] : undefined,
          thisArg = length > 1 ? arrays[length - 1] : undefined;
  
      if (length > 2 && typeof iteratee == 'function') {
          length -= 2;
      } else {
          iteratee = (length > 1 && typeof thisArg == 'function') ? (--length, thisArg) : undefined;
          thisArg = undefined;
      }
      arrays.length = length;
      return unzipWith(arrays, iteratee, thisArg);
  });
  
  module.exports = zipWith;
  