Function append

bolt/vector/BaseVector.h:266–271

  }

  virtual void append(const BaseVector* other) {
    auto totalSize = BaseVector::length_ + other->size();
    auto previousSize = BaseVector::size();
    resize(totalSize);
    copy(other, previousSize, 0, other->size());
  }

  /**
   * @return the number of bytes this vector takes on disk when in a compressed