void _next_term(){
if( next_term != end_term){
term.cell() = complex->find_cell( next_term->cell());
term.coefficient( next_term->coefficient());
++next_term;
return;
}
_end_term();
}
void _next_term(){
if( next_term != end_term){
const auto & cell = complex->find_cell( next_term->cell());
term.cell() = cell->second.id();
term.coefficient( next_term->coefficient());
++next_term;
return;
}
_end_term();
}
//end constructor
_const_filtration_boundary_iterator( Filtration & _f): filtration( &_f), complex( &(_f.complex())){
_end_term();
}
//end constructor
_const_boundary_iterator( Complex & _complex): complex( &_complex){
_end_term();
}
