Method push

src/Stack.js:49–69

(/*...values*/)

  // @pragma Modification

  push(/*...values*/) {
    if (arguments.length === 0) {
      return this;
    }
    const newSize = this.size + arguments.length;
    let head = this._head;
    for (let ii = arguments.length - 1; ii >= 0; ii--) {
      head = {
        value: arguments[ii],
        next: head,
      };
    }
    if (this.__ownerID) {
      this.size = newSize;
      this._head = head;
      this.__hash = undefined;
      this.__altered = true;
      return this;
    }
    return makeStack(newSize, head);
  }

  pushAll(iter) {
    iter = IndexedCollection(iter);