I'm new to ICL and have a few questions and a problem.

Here is my test code which demonstrated (Windows, MSVC 2012):

// "icl_question.cpp"

#include "precomp.hpp"

#include <iostream>

#include <utility>

#include <functional>

#include <boost/cstdint.hpp>

#include <boost/icl/closed_interval.hpp>

#include <boost/icl/interval_map.hpp>

typedef boost::icl::closed_interval<boost::uint16_t> interval_t;

// Based on the in "boost/icl/functors.hpp".

template <typename Type> struct inplace_assign

    : public boost::icl::identity_based_inplace_combine<Type>

{

    typedef inplace_assign<Type> type;

    void operator()(Type& object, const Type& operand) const

    {

        object = operand;

    }

};

// Why is the 7 template parameter not a template template parameter?

// The code in "boost/icl/detail/design_config.hpp" does not define the

// ICL_USE_INTERVAL_TEMPLATE_TYPE macro (I assume intentionally) which, if

// defined, would make it so.

typedef boost::icl::interval_map

                        <

                        boost::uint16_t,

                        const char*,

                        boost::icl::partial_absorber,

                        std::less,

                        inplace_assign,

                        boost::icl::inter_section,

                        interval_t

                        > map_t;

int main(int argc, char *argv[])

{

    using namespace std;

    map_t mem;

    // The commented line two down is what I intend, but it asserts at runtime.

    // This one works.

    mem += make_pair(interval_t(0, 0xfffe), "RAM");

    //mem += make_pair(interval_t(0, 0xffff), "RAM");

    mem += make_pair(interval_t(0xa000, 0xbfff), "Basic ROM");

    cout << hex << mem << endl;

    return 0;

}

The first question is about the aggregate on collision functionality. I would just like to replace. I have implemented inplace_assign which does this but it seems strange that this isn't included. Am I missing something here (I fear I may well be)?

The second question is why interval_map's 7th template parameter (Interval) is not a template template parameter. The code in "boost/icl/detail/design_config.hpp" does not define the ICL_USE_INTERVAL_TEMPLATE_TYPE macro (I assume intentionally) which, if defined, would make it so.

The third question is about a runtime error I'm getting in the above code. The comment in main shows the scenario. Basically if I use 0xffff as the end of the first range I get an ASSERT at runtime whereas 0xfffe works fine.

Finally, the documentation seems a little sparse on the function of the Section template parameter. Any clarification on that would be appreciated.

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