Method slice

src/Stack.js:117–140

(begin, end)

  }

  slice(begin, end) {
    if (wholeSlice(begin, end, this.size)) {
      return this;
    }
    let resolvedBegin = resolveBegin(begin, this.size);
    const resolvedEnd = resolveEnd(end, this.size);
    if (resolvedEnd !== this.size) {
      // super.slice(begin, end);
      return IndexedCollection.prototype.slice.call(this, begin, end);
    }
    const newSize = this.size - resolvedBegin;
    let head = this._head;
    while (resolvedBegin--) {
      head = head.next;
    }
    if (this.__ownerID) {
      this.size = newSize;
      this._head = head;
      this.__hash = undefined;
      this.__altered = true;
      return this;
    }
    return makeStack(newSize, head);
  }

  // @pragma Mutability