code: function arrayEqualsHandler(callback) {
        return function handleArray(val1, val2) {
          var left = arrayWrap(val1), right = arrayWrap(val2);
          if (left.length !== right.length) return false;
          for (var i = 0; i < left.length; i++) {
            if (!callback(left[i], right[i])) return false;
          }
          return true;
        };
      }
docs: Wraps type (.equals) functions to operate on each value of an array