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[GIL] [Patch] References cannot be mutable
by Doug Gregor 23 Apr '10

23 Apr '10

boost/gil/extension/dynamic_image/apply_operation_base.hpp has two references marked "mutable", at lines 141 and 157, but references cannot be mutable. This patch removes the "mutable" keyword from both cases. - Doug

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[any] allocator support?
by Kenny Riddile 23 Apr '10

23 Apr '10

This may have been brought up before, but I have a case where I need to use boost::any with types that require custom allocation. As far as I can tell, this isn't currently possible. Is there a reason boost::any doesn't allow specifying an allocator? std::allocator would obviously be the default. Has anyone maybe done this themselves already and be willing to share?

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[geometry] few questions
by Janek Kozicki 23 Apr '10

23 Apr '10

Hello, By looking at the documentation I can see that Geometry library is great for 2D polygons. I am working in 3D, so I wanted to ask about what I can, and what I can't. Is it possible to define 3D shapes, calculate their intersections, unions and so on? What about centroids and second (geometrical) moments of inertia? Does the geometry deal with spheres, or maybe other classical 3D geometries, like ellipsoid, torus or cone? What about the infinite geometries (like infinite cone)? Or infinitely long line? Also I wanted to ask about 3D points regarded as vectors. Can I add and subtract them? What about 3D vector cross product. What about dot product? I guess that I need to write that 'very old formula' function myself? In fact, since you are well into the subject, perhaps you could tell me if there are anywhere in boost a vector dot product and cross product implemented? Last but not least - I am doing frequently a 3D rotation of 3D points using quaternions for that (this could work with rotation matrices too). I suppose that I would need to implement this myself to "link" boost::quaternion with boost::geometry::point3d. please enlighten me and thank you very much for your time -- Janek Kozicki http://janek.kozicki.pl/ |

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BOOST_EXPLICIT_OPERATOR_BOOL macro?
by Christian Holmquist 23 Apr '10

23 Apr '10

Hi, IIUC, c+0x allows the safe bool idiom to be implemented as explicit operator bool() const { ...} but in c+03 emulating that behaviour is a bit messy. There appears to be a solution for c+03 in boost/smart_ptr/detail/operator_bool.hpp, but it's targeted for the smart_ptr classes only. Would it be possible to extract operator_bool.hpp into a reusable macro, something like: #include <boost/utility/operator_bool.hpp> struct some { BOOST_EXPLICIT_OPERATOR_BOOL( m_value != 0; ) int m_value; }; What do you think? Cheers, Christian

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[range] new adaptor for iterating over equal_ranges
by Thorsten Ottosen 23 Apr '10

23 Apr '10

Hi Neil & others, I think it could be useful with a range adaptor of the following kind to iterate over equal_ranges in a multimap. E.g. SomeMultiMap map = ...; for( auto rng : map | boost::adaptors::equal_ranged ) for( auto iter : rng ) { // do something with the objects with equal keys } The resulting range would probably be bidirectional with value_type std::pair<boost::range_iterator<SomeMultiMap>::type,...>. Thoughts? -Thorsten

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Fwd: Re: [interprocess][move] enum template argument fails to be a valid base class
by Ion Gaztañaga 23 Apr '10

23 Apr '10

>i think I spoke too fast, is_enum needs compiler intrinsics according >to >boost documentation, so maybe this approach is not very useful... Forget it. I was talking about is_union instead. God, the lack of coffee is killing me ;-) Best, Ion

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[1.43.0] Beta 1 Release Candidates available
by Beman Dawes 23 Apr '10

23 Apr '10

The 1.43.0 Beta 1 Release Candidate files are available at http://boost.cowic.de/rc/ Before these get pushed out to SourceForge, we like to get verification that they download and build OK on at least Linux and Windows. So please download one of these for your favorite platform, try a build, and report success or failure here. Thanks, --Beman

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[containers] flat_multimap compile errorin trunk
by Thorsten Ottosen 22 Apr '10

22 Apr '10

Hi Ion, The following code is making the compiler (vc9) choke: template<class D, class S> static D force_copy(S s) { value_type *vp = reinterpret_cast<value_type *>(&*s); return D(vp); } I don't get the code either? What is it good for, and why is a static_cast not good enough? If it helps, I'm using flat_multimap<BitSet,BitSet>, and not a build-in type. -Thorsten

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[atomic] review schedule?
by Janek Kozicki 22 Apr '10

22 Apr '10

Hello, I recall that Atomic library was submitted for review, but I'm not seeing it in http://www.boost.org/community/review_schedule.html Why is that? When it will be reviewed? best regards -- Janek Kozicki http://janek.kozicki.pl/ |

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[Fusion] [Phoenix] VC10
by Richard Crossley 22 Apr '10

22 Apr '10

I'm trying to port an existing program from V9 to VC10. With both Boost head and the 1.43RC I get a lot of errors relating to Phoenix and Fusion, none of which I've been able to recreate with a simple test and the back trace of the error messages are somewhat confusing. However if I the change the two BOOST_WORKAROUND(BOOST_MSVC, <= 1500) to 1600 in /boost/fusion/container/vector/vector.hpp all the problems seem to go away. Perhaps someone who is more knowledge about this could take a look? Thanks, Richard. 4>c:\boost_1_43_0_beta1\boost/fusion/container/vector/detail/vector_n.hpp(68 ): error C2665: 'boost::fusion::vector_data2<Derived,T0,T1>::vector_data2' : none of the 3 overloads could convert all the argument types 4> with 4> [ 4> Derived=boost::fusion::vector2<boost::phoenix::argument<0>,boost::phoenix::v alue<bool (__cdecl property_t::* )(void) const>>, 4> T0=boost::phoenix::argument<0>, 4> T1=boost::phoenix::value<bool (__cdecl property_t::* )(void) const> 4> ] 4> c:\boost_1_43_0_beta1\boost/fusion/container/vector/detail/vector_n.hpp(45): could be 'boost::fusion::vector_data2<Derived,T0,T1>::vector_data2(const boost::phoenix::argument<N> &,const boost::phoenix::value<T> &)' 4> with 4> [ 4> Derived=boost::fusion::vector2<boost::phoenix::argument<0>,boost::phoenix::v alue<bool (__cdecl property_t::* )(void) const>>, 4> T0=boost::phoenix::argument<0>, 4> T1=boost::phoenix::value<bool (__cdecl property_t::* )(void) const>, 4> N=0, 4> T=bool (__cdecl property_t::* )(void) const 4> ] 4> while trying to match the argument list '(const boost::phoenix::composite<EvalPolicy,EvalTuple>, const boost::mpl::void_)' 4> with 4> [ 4> EvalPolicy=boost::phoenix::mem_fun_ptr_eval, 4> EvalTuple=boost::fusion::vector<boost::phoenix::argument<0>,boost::phoenix:: value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_> 4> ] 4> c:\boost_1_43_0_beta1\boost/fusion/container/vector/detail/vector_n.hpp(105) : see reference to function template instantiation 'boost::fusion::vector_data2<Derived,T0,T1> boost::fusion::vector_data2<Derived,T0,T1>::init_from_sequence<Sequence>(con st Sequence &)' being compiled 4> with 4> [ 4> Derived=boost::fusion::vector2<boost::phoenix::argument<0>,boost::phoenix::v alue<bool (__cdecl property_t::* )(void) const>>, 4> T0=boost::phoenix::argument<0>, 4> T1=boost::phoenix::value<bool (__cdecl property_t::* )(void) const>, 4> Sequence=const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusio n::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>> 4> ] 4> c:\boost_1_43_0_beta1\boost/fusion/container/vector/vector.hpp(58) : see reference to function template instantiation 'boost::fusion::vector2<T0,T1>::vector2<Sequence>(const Sequence &)' being compiled 4> with 4> [ 4> T0=boost::phoenix::argument<0>, 4> T1=boost::phoenix::value<bool (__cdecl property_t::* )(void) const>, 4> Sequence=const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusio n::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>> 4> ] 4> c:\boost_1_43_0_beta1\boost/spirit/home/phoenix/core/composite.hpp(71) : see reference to function template instantiation 'boost::fusion::vector<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>::vector<const U0>(const Sequence &)' being compiled 4> with 4> [ 4> T0=boost::phoenix::argument<0>, 4> T1=boost::phoenix::value<bool (__cdecl property_t::* )(void) const>, 4> T2=boost::fusion::void_, 4> T3=boost::fusion::void_, 4> T4=boost::fusion::void_, 4> T5=boost::fusion::void_, 4> T6=boost::fusion::void_, 4> T7=boost::fusion::void_, 4> T8=boost::fusion::void_, 4> T9=boost::fusion::void_, 4> U0=const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusio n::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>>, 4> Sequence=const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusio n::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>> 4> ] 4> c:\boost_1_43_0_beta1\boost/fusion/container/vector/vector.hpp(58) : see reference to function template instantiation 'boost::phoenix::composite<EvalPolicy,EvalTuple>::composite<const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>>>(U0 &)' being compiled 4> with 4> [ 4> EvalPolicy=boost::phoenix::mem_fun_ptr_eval, 4> EvalTuple=boost::fusion::vector<boost::phoenix::argument<0>,boost::phoenix:: value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>, 4> T0=boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusion: :vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>, 4> T1=boost::fusion::void_, 4> T2=boost::fusion::void_, 4> T3=boost::fusion::void_, 4> T4=boost::fusion::void_, 4> T5=boost::fusion::void_, 4> T6=boost::fusion::void_, 4> T7=boost::fusion::void_, 4> T8=boost::fusion::void_, 4> T9=boost::fusion::void_, 4> U0=const boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::fusion::ve ctor<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusio n::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>> 4> ] 4> C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xlocnum(1081) : see reference to function template instantiation 'boost::fusion::vector<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>::vector<boost::phoenix ::composite<EvalPolicy,EvalTuple>>(const Sequence &)' being compiled 4> with 4> [ 4> T0=boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boost::fusion: :vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>, 4> T1=boost::fusion::void_, 4> T2=boost::fusion::void_, 4> T3=boost::fusion::void_, 4> T4=boost::fusion::void_, 4> T5=boost::fusion::void_, 4> T6=boost::fusion::void_, 4> T7=boost::fusion::void_, 4> T8=boost::fusion::void_, 4> T9=boost::fusion::void_, 4> EvalPolicy=boost::phoenix::logical_not_eval, 4> EvalTuple=boost::fusion::vector<boost::phoenix::composite<boost::phoenix::me m_fun_ptr_eval,boost::fusion::vector<boost::phoenix::argument<0>,boost::phoe nix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>, 4> Sequence=boost::phoenix::composite<boost::phoenix::logical_not_eval,boost::f usion::vector<boost::phoenix::composite<boost::phoenix::mem_fun_ptr_eval,boo st::fusion::vector<boost::phoenix::argument<0>,boost::phoenix::value<bool (__cdecl property_t::* )(void) const>,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,boost: :fusion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void _,boost::fusion::void_>>,boost::fusion::void_,boost::fusion::void_,boost::fu sion::void_,boost::fusion::void_,boost::fusion::void_,boost::fusion::void_,b oost::fusion::void_,boost::fusion::void_,boost::fusion::void_>> 4> ]

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