Method __iterator

src/Seq.js:182–193

(type, reverse)

  }

  __iterator(type, reverse) {
    const array = this._array;
    const size = array.length;
    let i = 0;
    return new Iterator(() => {
      if (i === size) {
        return iteratorDone();
      }
      const ii = reverse ? size - ++i : i++;
      return iteratorValue(type, ii, array[ii]);
    });
  }
}

class ObjectSeq extends KeyedSeq {