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 |