Method __iterator

src/Range.js:113–126

(type, reverse)

  }

  __iterator(type, reverse) {
    const size = this.size;
    const step = this._step;
    let value = reverse ? this._start + (size - 1) * step : this._start;
    let i = 0;
    return new Iterator(() => {
      if (i === size) {
        return iteratorDone();
      }
      const v = value;
      value += reverse ? -step : step;
      return iteratorValue(type, reverse ? size - ++i : i++, v);
    });
  }

  equals(other) {
    return other instanceof Range