compose_property_map<FPMap, GPMap>
This property map is an adaptor that composes two property map. The new property map will of the same model as FPMap. GPMap must model Readable Property Map.
#include <boost/property_map/compose_property_map.hpp>
#include <iostream>
int main()
{
const int idx[] = {2, 0, 4, 1, 3};
double v[] = {1., 3., 0., 4., 2.};
boost::compose_property_map<double*, const int*> cpm(v, idx);
for (int i = 0; i < 5; ++i)
std::cout << get(cpm, i) << " ";
std::cout << std::endl;
for (int i = 0; i < 5; ++i)
++cpm[i];
for (int i = 0; i < 5; ++i)
std::cout << get(cpm, i) << " ";
std::cout << std::endl;
for (int i = 0; i < 5; ++i)
put(cpm, i, 42.);
for (int i = 0; i < 5; ++i)
std::cout << get(cpm, i) << " ";
std::cout << std::endl;
return 0;
}
Output:
0 1 2 3 4 1 2 3 4 5 42 42 42 42 42
boost/property_map/compose_property_map.hpp
| Parameter | Description |
|---|---|
| FPMap | Must be a property map of any kind. |
| GPMap | Must be a model of Readable Property Map. |
In addition to the methods and functions required by property maps, this class has the following members:
compose_property_map(const FPMap& f, const GPMap& g);Constructor.
template <class FPMap, class GPMap> compose_property_map<FPMap, GPMap> make_compose_property_map(const FPMap& f, const GPMap& g);Returns a compose_property_map using the given property maps type.
| Copyright © 2013 | Eurodecision |
| Author: | Guillaume Pinot |