code: function reduce(array, callback, accumulator) {
      var noaccum = arguments.length < 3;
      forEach(array, function(value, index) {
        accumulator = noaccum ? (noaccum = false, value) : callback(accumulator, value, index, array);
      });
      return accumulator;
    }
docs: A generic `Array#reduce` like method.
  
  @static
  @memberOf Benchmark
  @param {Array} array The array to iterate over.
  @param {Function} callback The function called per iteration.
  @param {Mixed} accumulator Initial value of the accumulator.
  @returns {Mixed} The accumulator.