row_itor
for (row_itor i = fPatchRows.begin(); i != fPatchRows.end(); i++) {
for (row_itor i = fPatchRows.begin(); i != fPatchRows.end(); i++) {
for (row_itor i = fPatchRows.begin(); i != fPatchRows.end(); i++) {
for (row_itor i = fPatchRows.begin(); i != fPatchRows.end(); i++) {
for (row_itor i = fPatchRows.begin(); i != fPatchRows.end(); i++) {