C++ (Cpp) parameters::find Examples

Example #1

File: mapnik_parameters.cpp Project: PetrDlouhy/mapnik

mapnik::value_holder get_params_by_key1(mapnik::parameters const& p, std::string const& key)
{
    parameters::const_iterator pos = p.find(key);
    if (pos != p.end())
    {
        // will be auto-converted to proper python type by `mapnik_params_to_python`
        return pos->second;
    }
    return mapnik::value_null();
}

Example #2

File: mapnik_parameters.cpp Project: PetrDlouhy/mapnik

mapnik::value_holder get_params_by_key2(mapnik::parameters const& p, std::string const& key)
{
    parameters::const_iterator pos = p.find(key);
    if (pos == p.end())
    {
        PyErr_SetString(PyExc_KeyError, key.c_str());
        boost::python::throw_error_already_set();
    }
    // will be auto-converted to proper python type by `mapnik_params_to_python`
    return pos->second;
}