#include <CGAL/property_map.h>

Definition

Property map that accesses the first item of a std::pair.

Template Parameters

Pair	Instance of `std::pair`.

Examples:: Point_set_processing_3/property_map.cpp, and Point_set_processing_3/read_write_xyz_point_set_example.cpp.

Public Types
typedef Pair	key_type
	typedef to `Pair`

typedef Pair::first_type	value_type
	typedef to `Pair::first_type`

typedef value_type &	reference
	typedef to `value_type&`

typedef boost::lvalue_property_map_tag	category
	boost::lvalue_property_map_tag

typedef First_of_pair_property_map < Pair >	Self

Public Member Functions
reference	operator[] (key_type &pair) const
	Access a property map element. More...

Related Functions
(Note that these are not member functions.)
template<class Pair >
First_of_pair_property_map< Pair >	make_first_of_pair_property_map (Pair)
	Free function to create a `First_of_pair_property_map` property map.

Put/get free functions
const value_type &	get (const Self &, const key_type &k)

reference	get (const Self &, key_type &k)

void	put (const Self &, key_type &k, const value_type &v)

Member Function Documentation

template<typename Pair >

reference CGAL::First_of_pair_property_map< Pair >::operator[] ( key_type & pair) const

Access a property map element.

Parameters

pair	a key whose first item is accessed