Method IndexOfFirstOccurrence

Common/Core/vtkCollection.cxx:198–219

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//------------------------------------------------------------------------------
int vtkCollection::IndexOfFirstOccurrence(vtkObject* a) const
{
  if (!this->Top || !a)
  {
    return -1;
  }

  vtkCollectionElement* elem = this->Top;
  for (int i = 0; i < this->NumberOfItems; i++)
  {
    if (elem->Item == a)
    {
      return i;
    }
    else
    {
      elem = elem->Next;
    }
  }

  return -1;
}

//------------------------------------------------------------------------------
int vtkCollection::IsItemPresent(vtkObject* a) VTK_FUTURE_CONST