May 2010 - Boost-users - lists.preview.boost.org

Boost Graph: why can't get() take a const argument?
by Trevor Harmon 08 May '10

08 May '10

Hi, I have a question about line 54 of the canonical_ordering example: graph g(6); ... property_map<graph, edge_index_t>::type e_index = get(edge_index, g); If I'm reading the Boost source code correctly, the get function's graph argument is declared const. This makes sense intuitively because, well, why would the graph need to be modified in order to retrieve a property? So the graph parameter passed to get() could be made const, correct? Like this: graph g(6); ... const graph g2 = g; property_map<graph, edge_index_t>::type e_index = get(edge_index, g2); However, the above change gives a compiler error: conversion from ‘boost::adj_list_edge_property_map<boost::undirected_tag, int, const int&, size_t, const boost::property<boost::edge_index_t, int, boost::no_property>, boost::edge_index_t>’ to non-scalar type ‘boost::adj_list_edge_property_map<boost::undirected_tag, int, int&, size_t, boost::property<boost::edge_index_t, int, boost::no_property>, boost::edge_index_t>’ requested Can anyone explain why? Thank you, Trevor

3 7

[boost-users][proto] Types of arguments to operator()
by Manjunath Kudlur 07 May '10

07 May '10

I realize that this may be more of a C++ language question rather than proto specific. But I will ask it anyway. I wrote a transform that infers some type information for the placeholders from an expression. Say I have the expression _1 = _2 + 1, the transform can tell me that the type of the first argument to operator() of the expression wrapper should be "T &" and the type of the second should be "const T&". Here is the transform (thanks to JoelF for his help on this) : struct arg_tag {}; template<int N> struct arg : proto::or_<proto::nullary_expr<arg_tag, mpl::int_<N> > > {}; template<typename T> struct readonly : proto::callable { typedef const T& result_type; }; template<typename T> struct readwrite : proto::callable { typedef T& result_type; }; template<int N, typename T> struct argtype : proto::or_< proto::when<proto::assign<arg<N>, proto::_>, readwrite<T>()> , proto::otherwise<readonly<T>()> > {}; namespace boost { namespace proto { template<class T> struct is_callable< readonly<T> > : mpl::true_ {}; template<class T> struct is_callable< readwrite<T> > : mpl::true_ {}; } } Now, given an expression type E, I can say "typename boost::result_of<argtype<0, T0>(const E &)>::type" and it will be either "T0 &" or "const T0 &" depending on how _1 appears in the expression E. Using this, I tried to write an expression wrapper with operator() overloaded as follows : template<typename T0> void operator()(typename boost::result_of<argtype<0, T0>(const Expr &)>::type arg0) const { cout << "arg0 " << arg0 << "\n"; } But the compiler fails to find a match with this overloaded version when I write, say, (_1)(10). Is it some fundamental C++ restriction that causes this, or am I missing something? I will be grateful for any advice. I am attaching the complete source code (fails to compile). -- Manjunath http://nonchalantlytyped.net/blog/musings/

4 8

vpath so far...
by Dan Bloomquist 07 May '10

07 May '10

Hi, I have ordered a new copy of /C++/ Template /Metaprogramming. /I am trying to do this stuff the Boost way and now I have a pretty good handle on using regex. Other than this stuff needs to be wrapped in proper namespaces, I was just wondering how it looks. Thanks, Dan. ~~ This is what the usage would look like, this class has the workings of a singleton. The name map might be a class the exposes just the string pair to the internal parser so more than just a string name can be stored in the map. In my case I also carry a set of flags in my old code. ~~~ main.cpp ~~~ the test, it works so far... #include <vpath.hpp> using namespace boost::filesystem; // for ease of testing using namespace boost::xpressive; int main(int argc, char *argv[]) { //this should be a vpath type? std::pair< std::string, std::string > strTS( "$(", ")" ); //uses shared pointer for create and forget usage, and scope of creation is not relevant sp_virtual_filesystem_map vtable= sp_virtual_filesystem_map( new virtual_filesystem_map ); { //test, initialize in local scope vpath init( strTS, vtable ); } //the table can be modified any time or replaced with 'set_vnames (*vtable)[ "PATH" ]= "test_path"; (*vtable)[ "TEST" ]= "test.txt"; //the test vpath testPath( "C:\\$(PATH)\\class\\User_2_2\\$(TEST)" ); std::cout << testPath << std::endl; //prints: 'c:/test_path/class/User_2_2/test.txt' } ~~~~ the vpath.hpp //I have a list of includes in stdafx.h so may have missed one or two here #include <boost/filesystem/operations.hpp> #include <boost/regex.hpp> #include <boost/xpressive/xpressive.hpp> #include <boost/xpressive/regex_actions.hpp> #include <boost/shared_ptr.hpp> #include <map> template<class String, class Traits> class basic_vpath; typedef basic_vpath< std::string, boost::filesystem::path_traits > vpath; typedef std::map< std::string, std::string > virtual_filesystem_map; typedef boost::shared_ptr< virtual_filesystem_map > sp_virtual_filesystem_map; template<class String, class Traits> class basic_vpath :public boost::filesystem::basic_path< String, Traits > { //app scope singleton static sp_virtual_filesystem_map spVNamesPaths; //app scope singleton static boost::xpressive::sregex signature; void parse_path( ) { String str=( regex_replace( string( ), signature, ref( *spVNamesPaths )[ s1 ] ) ); clear( ); operator/= ( str ); } public: //should probably parse before assign to path basic_vpath( const string_type & s ) :basic_path( s ) { if( ! spVNamesPaths ) return; parse_path( ); } basic_vpath( const value_type * s ) :basic_path( s ) { if( ! spVNamesPaths ) return; parse_path( ); } //initialize, the singleton constructor basic_vpath( std::pair< String, String >& sig, sp_virtual_filesystem_map spMap ) { set_signature( sig ); set_vnames( spMap ); } void set_signature( std::pair< String, String >& sig ) { signature= sig.first >> (s1 = +_w) >> sig.second; } void set_vnames( sp_virtual_filesystem_map spVNames ) { spVNamesPaths= spVNames; } }; ~~~~~ need a vpath.cpp for the persistent members #include "stdafx.h"// use precompiled headers for development #include <vpath.hpp> sp_virtual_filesystem_map vpath::spVNamesPaths; boost::xpressive::sregex vpath::signature; ~~~~ stdafx.h// for test #include <boost/filesystem/operations.hpp> #include <boost/regex.hpp> #include <boost/xpressive/xpressive.hpp> #include <boost/xpressive/regex_actions.hpp> #include <boost/shared_ptr.hpp> #include <iostream> // for std::cout #include <map> #include <stdio.h> #include <ostream>

1 0

[serialization] anyone using portable binary archives?
by Stepan Hrbek 07 May '10

07 May '10

Is anyone here using portable binary archive? It seems that serialization by pointer doesn't work. Example demo_portable_archive doesn't link after changing "char c" to "A* c". I don't understand why, it is also not listed in TODO http://www.boost.org/doc/libs/1_43_0/libs/serialization/doc/todo.html polymorphic_portable_binary_archive doesn't compile at all, it includes missing boost/archive/detail/polymorphic_oarchive_dispatch.hpp I tested boost 1.42, 1.43, msvc71, msvc90. Stepan

3 4

[accumulators] when typeof power is not the same as source
by alfC 07 May '10

07 May '10

Hi, Some features of accumulator, such as variance needs to compute powers of quantities. What happens if the power of quantity is not the same as the type of the original quantity? An example is a boost::units::quantity, accumulator_set< quantity<si::energy>, stats<tag::mean, tag::moment<2> > > acc; //not compiling because of moment<2> acc(1.2*si::joules); ... Boost Accumulators manual describes how to do something similar for average calculation (which I succeded in defining), by doing some template tag dispatching in boost::numeric::functional, http://www.boost.org/doc/libs/1_40_0/doc/html/accumulators/user_s_guide.htm… In this case I need the analogous for pow (power function), I tried overloading pow(T, mpl::int_<N>) but I had no luck namespace boost { namespace numeric{ using namespace boost::units; quantity<atomic::energy> const& pow(quantity<atomic::energy> const &x, mpl::int_<1>){ return x; } quantity<power_typeof_helper< atomic::energy, //angstrom_unit, static_rational<2> >::type> pow(quantity<atomic::energy> const& x, mpl::int_<2>){ return x*x; } }} The error looks something like this (below, sorry it is very long). Thank you, Alfredo /g/g91/correaa/usr/include/boost/accumulators/statistics/moment.hpp: In function 'T boost::numeric::pow(const T&, mpl_::int_<Level>) [with T = boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, int N = 2]': /g/g91/correaa/usr/include/boost/accumulators/statistics/moment.hpp: 69: instantiated from 'void boost::accumulators::impl::moment_impl<N, Sample>::operator()(const Args&) [with Args = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> >, N = mpl_::int_<2>, Sample = boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>]' /g/g91/correaa/usr/include/boost/accumulators/framework/ accumulator_set.hpp:53: instantiated from 'void boost::accumulators::detail::accumulator_visitor<Args>::operator() (Accumulator&) const [with Accumulator = boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, Args = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> >]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/detail/ for_each.hpp:31: instantiated from 'void boost::fusion::detail::for_each_linear(const First&, const Last&, const F&, mpl_::false_) [with First = boost::fusion::cons_iterator<boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> >, Last = boost::fusion::cons_iterator<boost::fusion::nil>, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/detail/ for_each.hpp:32: instantiated from 'void boost::fusion::detail::for_each_linear(const First&, const Last&, const F&, mpl_::false_) [with First = boost::fusion::cons_iterator<boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::mean_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sum>, boost::accumulators::tag::mean>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> > >, Last = boost::fusion::cons_iterator<boost::fusion::nil>, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/detail/ for_each.hpp:32: instantiated from 'void boost::fusion::detail::for_each_linear(const First&, const Last&, const F&, mpl_::false_) [with First = boost::fusion::cons_iterator<boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::sum_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sample>, boost::accumulators::tag::sum>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::mean_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sum>, boost::accumulators::tag::mean>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> > > >, Last = boost::fusion::cons_iterator<boost::fusion::nil>, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/detail/ for_each.hpp:32: instantiated from 'void boost::fusion::detail::for_each_linear(const First&, const Last&, const F&, mpl_::false_) [with First = boost::fusion::cons_iterator<boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::count_impl, boost::accumulators::tag::count>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::sum_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sample>, boost::accumulators::tag::sum>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::mean_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sum>, boost::accumulators::tag::mean>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> > > > >, Last = boost::fusion::cons_iterator<boost::fusion::nil>, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/detail/ for_each.hpp:41: instantiated from 'void boost::fusion::detail::for_each(Sequence&, const F&, Tag) [with Sequence = boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::count_impl, boost::accumulators::tag::count>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::sum_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sample>, boost::accumulators::tag::sum>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::mean_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sum>, boost::accumulators::tag::mean>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> > > >, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >, Tag = boost::fusion::forward_traversal_tag]' /g/g91/correaa/usr/include/boost/fusion/algorithm/iteration/ for_each.hpp:32: instantiated from 'void boost::fusion::for_each(Sequence&, const F&) [with Sequence = boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::count_impl, boost::accumulators::tag::count>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::sum_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sample>, boost::accumulators::tag::sum>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::mean_impl<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::tag::sum>, boost::accumulators::tag::mean>, boost::fusion::cons<boost::accumulators::detail::accumulator_wrapper<boost::accumulators::impl::moment_impl<mpl_::int_<2>, boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::accumulators::tag::moment<2> >, boost::fusion::nil> > > >, F = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >]' /g/g91/correaa/usr/include/boost/accumulators/framework/ accumulator_set.hpp:217: instantiated from 'void boost::accumulators::accumulator_set<Sample, Features, Weight>::visit(const UnaryFunction&) [with UnaryFunction = boost::accumulators::detail::accumulator_visitor<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::sample, const boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double> >, boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::accumulators::tag::accumulator, boost::accumulators::accumulator_set<boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, void> >, boost::parameter::aux::empty_arg_list> > >, Sample = boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, Features = boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, Weight = void]' /g/g91/correaa/usr/include/boost/accumulators/framework/ accumulator_set.hpp:250: instantiated from 'void boost::accumulators::accumulator_set<Sample, Features, Weight>::operator()(const A1&) [with A1 = boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, Sample = boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>, Features = boost::accumulators::stats<boost::accumulators::tag::mean, boost::accumulators::tag::moment<2>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, Weight = void]' .atomic.hpp.cpp:593: instantiated from here /g/g91/correaa/usr/include/boost/accumulators/statistics/moment.hpp: 40: error: conversion from 'boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<4l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000004l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>' to non- scalar type 'boost::units::quantity<boost::units::unit<boost::units::list<boost::units::dim<boost::units::length_base_dimension, boost::units::static_rational<2l, 1l> >, boost::units::list<boost::units::dim<boost::units::mass_base_dimension, boost::units::static_rational<1l, 1l> >, boost::units::list<boost::units::dim<boost::units::time_base_dimension, boost::units::static_rational<-0x00000000000000002l, 1l> >, boost::units::dimensionless_type> > >, boost::units::homogeneous_system<boost::units::list<boost::units::atomic::electron_mass_base_unit, boost::units::list<boost::units::atomic::elementary_charge_base_unit, boost::units::list<boost::units::atomic::reduced_planck_constant_base_unit, boost::units::list<boost::units::atomic::coulomb_force_constant_base_unit, boost::units::list<boost::units::atomic::boltzman_constant_base_unit, boost::units::dimensionless_type> > > > > >, void>, double>' requested compilation terminated due to -Wfatal-errors.

2 1

[boost][proto] Type inference using transform
by Manjunath Kudlur 07 May '10

07 May '10

I am trying to decide whether the argument type to a function taking a proto expression should be "const T&" or "T&" based on the expression itself. Suppose the expression was "_1 = _2 + 1" I want the first argument to a function, say FOO, to be T& and second argument to be const T&. I write a transform argtype<int, typename> as follows : #include <boost/proto/proto.hpp> #include <boost/mpl/int.hpp> #include <iostream> struct arg_tag {}; namespace proto = boost::proto; namespace mpl = boost::mpl; using namespace std; template<int N> struct arg : proto::or_<proto::nullary_expr<arg_tag, mpl::int_<N> > > {}; template<typename T> struct readonly : proto::callable { template<typename Sig> struct result; template<typename This> struct result<This()> { typedef const T& type; }; }; template<typename T> struct readwrite : proto::callable { template<typename Sig> struct result; template<typename This> struct result<This()> { typedef T& type; }; }; template<int N, typename T> struct argtype : proto::or_< proto::when<proto::assign<arg<N>, proto::_>, readwrite<T>()> , proto::otherwise<readonly<T>()> > {}; proto::nullary_expr<arg_tag, mpl::int_<0> >::type const _1 = {{}}; proto::nullary_expr<arg_tag, mpl::int_<1> >::type const _2 = {{}}; template<typename E> void foo(const E &e) { cout << typeid(typename boost::result_of<argtype<0,int>(const E&)>::type).name() << "\n"; } int main() { foo(_1=_1+1); return 0; } I expected the typeid printed out by the foo function to be equivalent to "int&" whereas I get "readwrite<int>". Any clues on where I am going wrong? Thanks, Manjunath http://nonchalantlytyped.net/blog/musings/

3 5

Boost Serialization warning
by Sulakshan Vajipayajula 07 May '10

07 May '10

Hello, I am encountering the following warning when using virtual base class pointer to serialize a derived class. The same warning is displayed for all sample test programs that come with the serialization library. The compiler used is g++ version 3.4.3. /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:56: warning: direct base `TestBase' inaccessible in `boost::detail::is_virtual_base_of_impl<TestBase, TestType1, mpl_::bool_< true> >::X' due to ambiguity Can you recommend any workarounds...or if this has been addressed. Thanks Sulakshan V #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/serialization/nvp.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/type_info_implementation.hpp> #include <boost/serialization/export.hpp> #include <boost/serialization/extended_type_info_no_rtti.hpp> #include <boost/archive/archive_exception.hpp> #include <boost/archive/basic_xml_archive.hpp> #include <fstream> class TestBase { public: TestBase() : m_baseInt(111) {} virtual ~TestBase() {} virtual const char* get_key() const = 0; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int) { ar & boost::serialization::make_nvp("BaseInt", m_baseInt); } int m_baseInt; }; BOOST_SERIALIZATION_ASSUME_ABSTRACT(TestBase) BOOST_CLASS_TYPE_INFO(TestBase, extended_type_info_no_rtti<TestBase>) BOOST_CLASS_EXPORT(TestBase) class TestType1 : public TestBase { public: TestType1() : m_int(666), m_float(777.f) {} virtual const char* get_key() const; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & boost::serialization::make_nvp("TestBase", boost::serialization::base_object<TestBase>(*this)); ar & boost::serialization::make_nvp("Type1Int", m_int); ar & boost::serialization::make_nvp("Type1Float", m_float); } int m_int; float m_float; }; BOOST_CLASS_TYPE_INFO(TestType1, extended_type_info_no_rtti<TestType1>) BOOST_CLASS_EXPORT(TestType1) const char* TestType1::get_key() const { return boost::serialization::type_info_implementation<TestType1>::type::get_con st_instance().get_key(); } class TestType2 : public TestBase { public: TestType2() : m_int(222), m_float(333.f) {} virtual const char* get_key() const; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & boost::serialization::make_nvp("TestBase", boost::serialization::base_object<TestBase>(*this)); ar & boost::serialization::make_nvp("Type2Int", m_int); ar & boost::serialization::make_nvp("Type2Float", m_float); } int m_int; float m_float; }; BOOST_CLASS_TYPE_INFO(TestType2, extended_type_info_no_rtti<TestType2>) BOOST_CLASS_EXPORT(TestType2) const char* TestType2::get_key() const { return boost::serialization::type_info_implementation<TestType2>::type::get_con st_instance().get_key(); } int main(int argc, char** argv[]) { //Create new file std::ofstream testTypeOFS("TestType.xml"); boost::archive::xml_oarchive testOutXML(testTypeOFS); TestType1* pT1 = new TestType1; TestType2* pT2 = new TestType2; testOutXML << boost::serialization::make_nvp("TestType1", pT1); testOutXML << boost::serialization::make_nvp("TestType2", pT2); testTypeOFS.close(); delete pT1; delete pT2; //Load the file back in to extract a derived type. std::ifstream testTypeIFS("TestType.xml"); boost::archive::xml_iarchive testInXML(testTypeIFS); TestBase* pTB = NULL; try { testInXML >> boost::serialization::make_nvp("TestBase", pTB); } catch(boost::archive::archive_exception& ex) { std::cout << "Archive Exception: " << ex.code << "-" << ex.what() << std::endl; char exitNotice; std::cin >> exitNotice; } testTypeIFS.close(); return 0; } /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:56: warning: direct base `TestBase' inaccessible in `boost::detail::is_virtual_base_of_impl<TestBase, TestType2, mpl_::bool_< true> >::X' due to ambiguity /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p: In instantiation of `boost::detail::is_virtual_base_of_impl<TestBase, TestType1, mpl_::bool_< true> >::X': /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:70: instantiated from `boost::detail::is_virtual_base_of_impl<TestBase, TestType1, mpl_::bool_< true> >' /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:78: instantiated from `boost::detail::is_virtual_base_of_impl2<TestBase, TestType1>' /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:87: instantiated from `boost::is_virtual_base_of<TestBase, TestType1>' /vob/adc/router/thirdparty/boost/boost/mpl/if.hpp:67: instantiated from `boost::mpl::if_<boost::is_virtual_base_of<TestBase, TestType1>, boost::mpl::identity<boost::serialization::void_cast_detail::void_caster _virtual_base<TestType1, TestBase> >, boost::mpl::identity<boost::serialization::void_cast_detail::void_caster _primitive<TestType1, TestBase> > >' /vob/adc/router/thirdparty/boost/boost/mpl/eval_if.hpp:37: instantiated from `boost::mpl::eval_if<boost::is_virtual_base_of<TestBase, TestType1>, boost::mpl::identity<boost::serialization::void_cast_detail::void_caster _virtual_base<TestType1, TestBase> >, boost::mpl::identity<boost::serialization::void_cast_detail::void_caster _primitive<TestType1, TestBase> > >' /vob/adc/router/thirdparty/boost/boost/serialization/void_cast.hpp:271: instantiated from `const boost::serialization::void_cast_detail::void_caster& boost::serialization::void_cast_register(const Derived*, const Base*) [with Derived = TestType1, Base = TestBase]' /vob/adc/router/thirdparty/boost/boost/serialization/base_object.hpp:68: instantiated from `static const void* boost::serialization::detail::base_register<Base, Derived>::polymorphic::invoke() [with Base = TestBase, Derived = TestType1]' /vob/adc/router/thirdparty/boost/boost/serialization/base_object.hpp:82: instantiated from `static const void* boost::serialization::detail::base_register<Base, Derived>::invoke() [with Base = TestBase, Derived = TestType1]' /vob/adc/router/thirdparty/boost/boost/serialization/base_object.hpp:104 : instantiated from `typename boost::serialization::detail::base_cast<B, D>::type& boost::serialization::base_object(Derived&) [with Base = TestBase, Derived = TestType1]' x.cpp:48: instantiated from `void TestType1::serialize(Archive&, unsigned int) [with Archive = boost::archive::xml_iarchive]' /vob/adc/router/thirdparty/boost/boost/serialization/access.hpp:118: instantiated from `static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = TestType1]' /vob/adc/router/thirdparty/boost/boost/serialization/serialization.hpp:7 4: instantiated from `void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = TestType1]' /vob/adc/router/thirdparty/boost/boost/serialization/serialization.hpp:1 33: instantiated from `void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = TestType1]' /vob/adc/router/thirdparty/boost/boost/archive/detail/iserializer.hpp:18 2: instantiated from `void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::xml_iarchive, T = TestType1]' x.cpp:93: instantiated from here /vob/adc/router/thirdparty/boost/boost/type_traits/is_virtual_base_of.hp p:56: warning: direct base `TestBase' inaccessible in `boost::detail::is_virtual_base_of_impl<TestBase, TestType1, mpl_::bool_< true> >::X' due to ambiguity

2 3

Regular Expression (vers. 1.34.1)
by Salvatore Benedetto 07 May '10

07 May '10

Hi there, I'm trying to use boost regular expression for the first time and I'm having some trouble getting it right. Current I'm trying to find all files with the a certain extension (by also using boost::filesystem), which should be simple, but I'm probably missing something. Here is the expression I'm using. boost::regex regularExpression; std::string expression("\.\/\w+(\.txt)"); try { regularExpression.assign(expression, boost::regex_constants::icase); ... std::string testAgainst((*iterPath).string()); if (boost::regex_match(testAgainst, regularExpression)) ... which (I thought) should match all string with the pattern "./filename.txt" but it does not. Using "\.\/\ReadMe(\.txt)" for example, correctly matches the ./ReadMe.txt file, so the \w+ seems not do what I'm reading from [1] where (\w+\.) is used to match part of a URL. Anyone can shine some light on this, or point me to another good reading about regular expression with boost? Note: I'm using version 1.34.1 because I have to. Thanks, S. [1] http://onlamp.com/pub/a/onlamp/2006/04/06/boostregex.html

5 7

boost and Obj-C++ ("id" variables)
by Manfred Schwind 07 May '10

07 May '10

Hi, in some headers, boost is using "id" as variable name. This makes is impossible to use those headers in Obj-C (or better Obj-C++) code, because "id" has a special meaning there. I worked around by renaming these id variables in the boost headers for every new boost release (hoping that it will be fixed in the next release), but this is ugly. Now I looked into the boost trac, and found that this problem was reported - and fixed! - multiple times. I can read from the trac that it SHOULD haven been fixed in the latest 1.43.0 (if I read that correct). It's fixed and it's Milestone is 1.43.0. So I downloaded boost 1.43.0 - but the problem is still there. Still "id" variables. How can this be? Doesn't this mean there are serious problems in source code control? Or hasn't the fix just not made its way into 1.43 - where can I read in which version a fix really appears? If I read it right, it should have been fixed in boost 1.37.0: https://svn.boost.org/trac/boost/ticket/2306 https://svn.boost.org/trac/boost/changeset/48751 But appeared again and should now be fixed in boost 1.43.0: https://svn.boost.org/trac/boost/ticket/4132 https://svn.boost.org/trac/boost/ticket/4191 https://svn.boost.org/trac/boost/changeset/61789 Any ideas what happens here? Regards, Mani -- http://mani.de - friendly software iVolume - listen to music hands-free LittleSecrets - the encrypted notepad Sahara - sand in your pocket Watchdog - baffle the curious

2 1

[units] easier "power" of units generation
by alfC 07 May '10

07 May '10

Hi, I have a custom units, for example, angstrom: typedef scaled_base_unit<si::meter_base_unit, scale<10, static_rational<-10> > > angstrom_base_unit; typedef metric::angstrom_base_unit::unit_type angstrom_unit; static const angstrom_unit angstrom; and I have a quantity quantity<angstrom_unit> L=1.*angstrom; and I want to have a variable that has dimensions of volume and angstrom^3 units: ??? V = pow<3>(L); ¿how can I generate the type of V, given angstrom_unit? I found this complicated way: quantity<unit< volume_dimension, make_system<angstrom_base_unit>::type > > V = pow<3>(L); Is there a more compact way or a way that doesn't explicitly mention angstrom_base_unit?, something like quantity<static_power<angstrom_unit, 3>::unit> V = pow<3>(L); // not working In other words, what are the metafunctions necessary to generate the typeof(pow<3>(L)) from angstrom_unit. Thank you, Alfredo

2 2