\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL 4.8 - CGAL and Boost Property Maps
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CGAL::First_of_pair_property_map< Pair > Struct Template Reference
CGAL and Boost Property Maps Reference

#include <CGAL/property_map.h>

Definition

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

Template Parameters
PairInstance of std::pair.
Is Model Of:
LvaluePropertyMap
See Also
CGAL::Second_of_pair_property_map<Pair>
Examples:
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
paira key whose first item is accessed