Function operator+

Common/DataModel/vtkDataSetAttributesFieldList.cxx:168–194

* This method merges `this` and `other` to return a new FieldInfo. */

   * This method merges `this` and `other` to return a new FieldInfo.
   */
  FieldInfo operator+(const FieldInfo& other) const
  {
    if (!this->IsEmpty() && this->IsSimilar(other))
    {
      FieldInfo result;
      result = *this;
      result.LUT = result.LUT ? result.LUT : other.LUT;
      result.Information = result.Information ? result.Information : other.Information;

      // merge component names.
      assert(result.ComponentNames.size() == other.ComponentNames.size());
      std::transform(result.ComponentNames.begin(), result.ComponentNames.end(),
        other.ComponentNames.begin(), result.ComponentNames.begin(),
        [](const std::string& in0, const std::string& in1) { return in0.empty() ? in1 : in0; });

      assert(other.Location.size() == 1);
      result.Location.insert(result.Location.end(), other.Location.begin(), other.Location.end());

      result.AttributeTypes.insert(
        result.AttributeTypes.end(), other.AttributeTypes.begin(), other.AttributeTypes.end());
      return result;
    }
    else
    {
      return FieldInfo();
    }
  }

  ///@{
  /**