## CGAL::Project_opposite_prev<Node>

### Definition

The class Project_opposite_prev<Node> calls the member functions opposite()->prev() on an instance of type Node.

#include <CGAL/function_objects.h>

### Is Model for the Concept

Projection_object

Project_opposite_prev<Node>::argument_type
| typedef to Node*.
Project_opposite_prev<Node>::result_type
| typedef to Node*.

### Creation

Project_opposite_prev<Node> o;
| default constructor.

### Operations

result_type& | o.operator() ( argument_type& n) const
|  | returns n->opposite()->prev().
const result_type& | o.operator() ( const argument_type& n) const
|  | returns n->opposite()->prev().