Compose Property Map Adaptor

compose_property_map

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.

Example

compose_property_map_example.cpp:

#include 
#include 

int main()
{
    const int idx[] = {2, 0, 4, 1, 3};
    double v[] = {1., 3., 0., 4., 2.};
    boost::compose_property_map 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

Where Defined

boost/property_map/compose_property_map.hpp

Template Parameters

Parameter	Description
`FPMap`	Must be a property map of any kind.
`GPMap`	Must be a model of Readable Property Map.

Members

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.

Non-Member functions

  template 
  compose_property_map
  make_compose_property_map(const FPMap& f, const GPMap& g);

Returns a compose_property_map using the given property maps type.