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

shared mutex ( read -write lock) for fibers
by Cristian Lorenzetto 23 Dec '17

23 Dec '17

is there a read-write lock for fibers? fibers mutex works also in a "normal" Thread when the scheduler is not installed?

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[Units] Name a unit for output
by Santiago Ospina 20 Dec '17

20 Dec '17

Hello boost-users, I would like to know if there is an equivalent for giving a name and a symbol given a unit in boost::units (maybe scaled from another one). I know the example of naming base units, however, it would imply I'd have to create a system and a conversion for every unit I want to implement. I tried to write it directly from the scaled version, like this: template<> struct scale_minute<60, static_rational<1> > … [View More]

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Re: [Boost-users] boost.msm and boost.mp11
by Didi JP BGF 19 Dec '17

19 Dec '17

Hi, there is this library that I use ... https://github.com/boost-experimental/sml ... Though I do not what the boost status is... On Tue, Dec 19, 2017 at 4:27 PM, Bogdan via Boost-users < boost-users(a)lists.boost.org> wrote: > Now that boost 1.66 includes mp11, is there a plan to upgrade the > meta-state > machine library (boost.msm) to something less macro dependent? > Thank you, > Bogdan > > _______________________________________________ > Boost-users … [View More]

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[release] Boost 1.66.0
by Daniel James 19 Dec '17

19 Dec '17

Release 1.66.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains N new libraries and numerous enhancements and bug fixes for existing libraries. For details, including download links, see <http://www.boost.org/users/news/version_1.66.0> You can also download directly from: <… [View More]

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boost.msm and boost.mp11
by Bogdan 19 Dec '17

19 Dec '17

Now that boost 1.66 includes mp11, is there a plan to upgrade the meta-state machine library (boost.msm) to something less macro dependent? Thank you, Bogdan

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Adding C++/CLI code to my project makes app crash on startup
by Sergio Basurco 19 Dec '17

19 Dec '17

Hi, I'm using Boost 1.65.1 with Visual Studio 2015 (v140 compiler). Also, I'm using the following libs dynamically: boost_unit_test_framework boost_log boost_filesystem boost_thread boost_system boost_log_setup &… [View More]

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Issue installing boost 1.65.1 on Centos 7
by Forum (io) 15 Dec '17

15 Dec '17

Dear All, I actually have a problem installing OpenEXR on a Centos 7. My problem is around ilmbase package and pyilmbas *and boost* as boost is required. And I have issue installing boost that I download from here https://gist.github.com/1duo/2d1d851f76f8297be264b52c1f31a2ab Before i decrive my problem let me explain where I looking around boost. When I compil ilambase, I got this error message: /$ ./compile --prefix=/opt/ilmbase2-2-0/ Both display this message/ / /checking for boost::… [View More]

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Named pipe available to other processes (boost::process)
by Mike Gibson 15 Dec '17

15 Dec '17

It seems that boost::process::basic_pipe::basic_pipe(const std::string& name) on posix creates a fifo using mkfifo, opens it and then unlinks it. I imagine there's a good reason for the unlink step in some situations, but it's causing me issues. I would like to use the fifo later with a non-boost::process started process, so by the time I get around to starting the second process, it can't access the fifo. Is there any workaround for this?

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Re: [Boost-users] [boost] [release] Boost 1.66.0 Release Candidate 2
by Marcel Raad 15 Dec '17

15 Dec '17

> -----Original Message----- > From: Boost [mailto:boost-bounces@lists.boost.org] On Behalf Of Olaf van > der Spek via Boost > Sent: Donnerstag, 14. Dezember 2017 16:11 > To: boost(a)lists.boost.org > Cc: Olaf van der Spek <ml(a)vdspek.org>; boost-users(a)lists.boost.org > Subject: Re: [boost] [release] Boost 1.66.0 Release Candidate 2 > > On Thu, Dec 14, 2017 at 2:03 PM, Daniel James via Boost > <boost(a)lists.boost.org> wrote: > > As always, … [View More]

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Re: [Boost-users] [boost] [release] Boost 1.66.0 Release Candidate 2
by Marcel Raad 15 Dec '17

15 Dec '17

Hi, > -----Original Message----- > From: Boost [mailto:boost-bounces@lists.boost.org] On Behalf Of Olaf van > der Spek via Boost > Sent: Donnerstag, 14. Dezember 2017 16:02 > To: boost(a)lists.boost.org > Cc: Olaf van der Spek <ml(a)vdspek.org>; boost-users(a)lists.boost.org > Subject: Re: [boost] [release] Boost 1.66.0 Release Candidate 2 > > On Thu, Dec 14, 2017 at 2:03 PM, Daniel James via Boost > <boost(a)lists.boost.org> wrote: > > The … [View More]

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ASIO and windows registered IO
by Tore Halvorsen 15 Dec '17

15 Dec '17

Hi, Have anyone tried to use the windows registered IO functionality with ASIO?

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[release] Boost 1.66.0 Release Candidate 2
by Daniel James 14 Dec '17

14 Dec '17

The second release candidates for the 1.66.0 release are now available at: <https://dl.bintray.com/boostorg/prerelease/> The in progress release notes are: <http://www.boost.org/users/history/in_progress.html> Library documentation is available at: <http://www.boost.org/doc/libs/1_66_0/> The SHA256 checksums are as follows: 596389389c005814ecb2a6b64c31dccd2c3e6fbc5a802b4dfada999ae5844628 boost_1_66_0_rc2.7z … [View More]

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Re: [Boost-users] [boost] [release] Boost 1.66.0 Release Candidate 2
by Daniel James 14 Dec '17

14 Dec '17

On 14 December 2017 at 15:02, Olaf van der Spek <ml(a)vdspek.org> wrote: > On Thu, Dec 14, 2017 at 2:03 PM, Daniel James via Boost > <boost(a)lists.boost.org> wrote: >> The second release candidates for the 1.66.0 release are now available at: >> >> <https://dl.bintray.com/boostorg/prerelease/> > > Repository path missing or not specified. Sorry, should be: https://dl.bintray.com/boostorg/release/1.66.0/source/

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Newbie: BGL & planar graphs
by ano kato 13 Dec '17

13 Dec '17

Hello everyone! I am using BGL to test for the planarity of drawings of graphs. The coordinates are hardcoded into the source code. Here's what the graph should look like: <https://i.imgur.com/UGA0mRB.png>. This definitely isn't planar and yet is_straight_line_drawing() returns 1! I'm quite confused. Am I doing something wrong? Thank you to anyone who replies. #include <iostream> #include <vector> #include <boost/graph/adjacency_list.hpp> #include <boost/… [View More]

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(Newbie) Embedded programming, memory pools, and allocate_shared()
by Steven Boswell II 13 Dec '17

13 Dec '17

I apologize for bothering the mailing-list with this newbie question, but after searching the Net for several days, I still can't find the answers I'm looking for. I am considering using Boost for a project I'm doing on an embedded system.I can't seem to find a lot of discussion on the particulars of Boost in embedded systems, just a few here and there.The biggest relevant limitation in embedded programming is on dynamic memory allocation -- the usual pattern is to allocate all necessary … [View More]memory in "startup" phases, e.g. launching the program, loading the next playing-field in a game application, etc. I believe I can do what I want with allocate_shared() and fixed-size memory pools.The first big issue I have is trying to figure out the size of the objects that'll be allocated from the pool.I don't want to just allocate a raw block of memory; I want to allocate a block with space for a certain number of objects of a homogeneous type.But an object_pool for a type T doesn't accurately reflect what allocate_shared() is going to try to create.From much digging around, it looks like it's actually creating a subclass of boost::detail::sp_counted_base, e.g. boost::detail::sp_counted_impl_pd<P,D>, boost::detail::sp_counted_impl_pda<P,D,A>, etc.It seems like I'm not supposed to refer to that class directly, but I don't know how else to get the size of individual objects for my pool-allocator.Also, navigating all the template-parameters needed by these classes is proving to be mind-twisting. Probably just because I'm seeing it for the first time. Another example of where I need to track down the implementation class is with async-operation handlers in Boost::ASIO, e.g. completion handlers for socket's async_read_some(), generic handlers passed to io_service::post(), and so on. In the case of socket::async_read_some(), there's an example in boost/doc/html/boost_asio/example/cpp03/allocation/server.cpp which shows how to allocate completion-handlers from a pool, but not how to get the size of the necessary completion-handler class. It appears the class is boost::asio::detail::reactive_socket_recv_op<>. Again, this doesn't seem to be a public class, nor can I find a nice public typedef for it. Can anyone advise me on how to use Boost in this way?All of the Boost memory-pools I've seen so far either just allocate chunks of raw memory, or they allocate non-shared variants of objects.A memory-pool with a given number of spaces for the final object type seems like a defensible, traditional solution, but it doesn't seem that Boost makes that easy.Am I way off base here? Thanks for any help. -Steven [View Less]

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[thread] clock_gettime warning on OS X
by James Walker 13 Dec '17

13 Dec '17

I'm getting a warning in the file boost/thread/pthread/timespec.hpp pointing out that clock_gettime is only available on macOS 10.12 and later. This code is being compiled on macOS 10.13, but should be compatible with macOS versions back to 10.7. How can I fix it? Maybe change the setting of BOOST_THREAD_USEFIXES_TIMESPEC, which I don't see any documentation for?

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[SmartPtr] local_weak_ptr?
by Rob Conde 11 Dec '17

11 Dec '17

How are boost::local_shared_ptr and boost::weak_ptr intended to be used together? I expected a local_weak_ptr, but it's not there so I'm wondering how you would (correctly) use local_shared_ptr and weak_ptr, or if you need local_weak_ptr and this is just still on the TODO list? Thanks, Rob Conde

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boost::container::string: ambiguous overload for 'operator!='
by niXman 10 Dec '17

10 Dec '17

Hi, using gcc-7.2 in C++17 mode and boost-1.65.1 I get the "ambiguous overload for 'operator!='" error: test here: http://coliru.stacked-crooked.com/a/3fd8fb94c0d1aec2 the same error for 'operator==' -- Regards, niXman ___________________________________________________ Work for Bitcoins ___________________________________________________ Dual-target(32 & 64-bit) MinGW-W64 compilers for 32 and 64-bit Windows: https://sf.net/p/mingw-w64/

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[release] Boost 1.66.0 Release Candidate 1
by Daniel James 09 Dec '17

09 Dec '17

The release candidates for the 1.66.0 release are now available at: <https://dl.bintray.com/boostorg/release/1.66.0/source/> The in progress release notes are: <http://www.boost.org/users/history/in_progress.html> Library documentation is available at: <http://www.boost.org/doc/libs/1_66_0/> The SHA256 checksums are as follows: c9d29486dd12f19d321da65eb5f0a157ec0f0edfd4701ade48c644310c8f0676 boost_1_66_0_rc1.7z … [View More]

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Errors while trying to build boost::priority_queue
by Ram 09 Dec '17

09 Dec '17

Hi, When I try to build "priority_queue_example.cpp" it get these warnings(and so errors) pointing to "priority_queue_example.h" on the line where my priority_queue is declared. The warnings are, 1> priority_queue_example.cpp 1>c:\Projects\lib\boost\boost\heap\detail\stable_heap.hpp(102): error C2220: warning treated as error - no 'object' file generated 1>c:\Projects\lib\boost\boost\heap\detail\stable_heap.hpp(102): warning C4100: 'rhs' : unreferenced formal parameter 1> … [View More]

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boost::priority_queue help
by Ram 09 Dec '17

09 Dec '17

Created a boost::priority_queue with my comparison operation defined. Here is how my priority_queue looks, boost::heap::priority_queue<myObject*, boost::heap::compare<myObjectPtrCompare> > max_heap; My comparison is defined as, struct myObjectPtrCompare{ bool operator()(const myObject* lhs, const myObject* rhs) const { return (lhs->getTime() < rhs->getTime()); }}; I have used it as, myObject* obj1 = static_cast<myObject*>(base1); 'base1' is … [View More]

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boost::priority_queue const correctness problem, help needed
by Ram 08 Dec '17

08 Dec '17

Created a boost::priority_queue with my comparison operation defined. Here is how my priority_queue looks, boost::heap::priority_queue<myObject*, boost::heap::compare<myObjectPtrCompare> > max_heap; boost::heap::priority_queue<myObject*, boost::heap::compare<myObjectPtrCompare> > max_heap; My comparison is defined as, struct myObjectPtrCompare { bool operator()(const myObject* lhs, const myObject* rhs) const { return (lhs->getTime() < rhs-… [View More]

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boost.test fails to zip custom datasets
by Georgios Sermaidis 08 Dec '17

08 Dec '17

I am trying to understand how to use datasets with the boost.test library. I am following the documentation here <http://www.boost.org/doc/libs/1_65_1/libs/test/doc/html/boost_test/tests_or…> and have created my dataset as follows: namespace bdata = boost::unit_test::data; struct test_set { class iterator { int m_a; public: iterator() : m_a(0){} void operator++() { ++m_a; } int operator*() const { … [View More]

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Easy install doesn't
by Jean-Louis Leroy 07 Dec '17

07 Dec '17

I downloaded the current version of boost from here: http://www.boost.org/users/download/ (the Unix tgz) Then I religiously followed these instructions: http://www.boost.org/doc/libs/1_61_0/more/getting_started/unix-variants.htm… It didn't install much of anything useful...just stuff in /usr/local/share/boost-build, apparently the build system. No headers were installed, no libs were built or installed... I tried to install from debian packages and that failed miserably too but that's … [View More]

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[iostreams] file_descriptor doesn't retry on EINTR
by David Roberts 30 Nov '17

30 Nov '17

Hi, I have found that the file_descriptor class in Boost.Iostreams does not retry on EINTR. The relevant code is in libs/iostreams/src/file_descriptor.cpp. A bug was raised for this 7 years ago: https://svn.boost.org/trac10/ticket/4913 <https://svn.boost.org/trac10/ticket/4913> There is a patch attached to that bug that makes the file_descriptor_impl::read method retry on EINTR. If something like this were implemented then something similar should also be done to retry in the … [View More]

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boost::asio::buffer bug with string literal
by Martijn Otto 29 Nov '17

29 Nov '17

When using boost::asio::buffer with a string literal the terminating null character is included in the buffer size, leading to bugs like accidentally sending out a null character. We could fix this by adding something like this to buffer.hpp: /// Create a new non-modifiable buffer that represents the given character array. /** * @returns A const_buffer value equivalent to: * @code const_buffer( * static_cast<const void*>(data), * &… [View More]

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[Spirit.Qi] failing to parse IP address octets
by Michael Powell 27 Nov '17

27 Nov '17

Hello, I've got the following parsers which are failing to find the correct attributes. I tried to parse in terms of uint_parser<uint8_t, 10, 1, 3>() at first, but this was not working properly. So I tried the following: _octet_rule = lexeme[ char_('0') | (char_('1') >> -(digit >> -digit)) | (char_('2') >> -((char_('0', '4') >> -(digit)) | (char_('5') >> -(char_('0', '5'))) | char_('6', '9') … [View More]

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[serialization] property_tree::ptree bpta back-end, json, forward (upward) compatibility
by Sergey Spiridonov 27 Nov '17

27 Nov '17

Hi Current binary, text and xml archive back-ends allow to implement backward compatibility. This means that it is possible to read old serialization files with the new version of the serialization code, with the help of the version of the class which is stored in archive itself. Unfortunately forward compatibility is not possible to implement with the existing archive backends. Suppose we have class A with one field. struct A { template<class Archive> inline void serialize(Archive … [View More]& ar, const unsigned int version ) { ar & BOOST_SERIALIZATION_NVP(field); } int field; }; Later we want to add a new field2. To be able to load the previously created file we need can use versioning. struct A { template<class Archive> inline void serialize(Archive & ar, const unsigned int version ) { ar & BOOST_SERIALIZATION_NVP(field); if(version > 0) { ar & BOOST_SERIALIZATION_NVP(field2); } } int field; int field2; }; BOOST_CLASS_VERSION(A, 1) But if we want the opposite, to load the old class from the file which was created from the new class (for example, if we use serialization to communicate between new and old version of application on the network), existing backends will fail. Why? The reason is that they expect certain field in certain order and do not allow unexpected unknown fields. Although with text and binary backend it is difficult to do, because field names are not stored, but xml backend has names for every field, so it can simply skip unknown fields. Unfortunately this is not implemented. I created [1] simple experimental archive which allows forward(upward) compatibility. It stores data in boost::property_tree::ptree (instead of std::stream), which, in turn, can be saved to json, if necessary. If the file which is loaded, has additional unknown fields (from future version), they will be ignored. [1] https://github.com/sena73/ptree_archive Intermediate storage of data in ptree has its advantages and disadvantages. Of course, this slows down things and requires more memory. On other hand, it allows to get upward compatibility automatically easily and even to process data before (or without) loading it into the target class. Also we get json and info storage for free. With little modification xml backend from property_tree can be used. Sure, it must be possible to create a version of boost::archive::xml which will be also capable to keep upward compatibility without necessity to load things into the property_tree first. Binary and text archives must be extended with field names to allow field skipping. -- Best regards, Sergey Spiridonov [View Less]

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[release] Boost 1.66.0 Beta 1
by Daniel James 24 Nov '17

24 Nov '17

Boost release 1.66.0 beta 1 is now available at: <https://dl.bintray.com/boostorg/beta/1.66.0.beta.1/source/> The SHA256 checksums are as follows: e7b23e638e8c3a9da1512439385b04850829cea7bd56d8398677c096857d830b boost_1_66_0_b1.7z 5d0405eb73bd609ebcd54bbc96d4f1e2d97c51b96c4703706695ddd94f942d6b boost_1_66_0_b1.tar.bz2 f0f455e39bc47b2b670a17cb221687506e9a22dc478956d3d8aabb9cb835a7dc boost_1_66_0_b1.tar.gz 694c8b9e902b7981670bce166f675f3875c19326936db51aabd98d2ddfea9b45 boost_1_66_0_b1.… [View More]

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how to build boost binary libraries for GCC in windows 10
by Renfan Luo 23 Nov '17

23 Nov '17

Hi All As VS supports OpenMP2.0 only, I have to use GCC instead for my project with parallelisation in coding. I have downloaded Cygwin and installed the GCC 6.4.0 then updated it to the latest version 5.5.0 on my windows 10. All those binary libraries I built up in VS 2017, I guess, cannot be usable for GCC, so it may be necessary to rebuild them for boost 1.65.1 for GCC. Could you guys show me how to build them? Cheers Renfan

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function template argument deduction with std::tuple
by Ireneusz Szcześniak 23 Nov '17

23 Nov '17

Hi, I have a problem related to function template argument deduction with std::tuple (with boost::tuple too). I attach a file with the complete source you can compile. Below I describe the code. I have a template function declaration: > template <typename T> > auto > get_cost(const T &); Then I define my template types: > template <typename Graph> > using Vertex = typename Graph::vertex_descriptor; > > template <typename Graph> > using … [View More]

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Building b2 --prefix include directory not quite
by Michael Powell 22 Nov '17

22 Nov '17

Hello, So the B2 help indicates that the include directory should be whatever "<prefix>/include" is. So, I'm setting my prefix accordingly, something like, "/path/to/installed/boost-1.65.1", however, the include directory ends up being something a little more like this: "/path/to/installed/boost-1.65.1/include/boost-1_65_1". This looks like a bug to me. Can I set the --includedir myself and correct this during my build? Thank you... Cheers, Michael Powell

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[Interprocess] Waiting thread termination causes deadlock
by Markus Bonk 22 Nov '17

22 Nov '17

Hi, I am having issues with boost::interprocess::ipcdetail::spin_condition::do_wait_timed deadlocking. The issue occurs when a thread that is waiting due to a call to interprocess_condition_any::wait() terminates unexpectedly and interprocess_condition_any::notify_all() is called (from any process). The cause of the deadlock is not that the terminating thread held a lock – it doesn’t because it is waiting, but that spin_condition::m_num_waiters is never decremented to zero because one of the … [View More]

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Adding Lzma support to b2 invocation
by Michael Powell 22 Nov '17

22 Nov '17

Hello, So I've got LZMA downloading, have the include in hand, as well as what I presume are either object files and/or a DLL. Just need to know how to integrate that with my B2 invocation. Something like: -sLZMA_INCLUDE="/path/to/lzma/include" ? And then, how to include the object file with the linkage, or the DLL(s). And necessarily in which architecture/address-model. Otherwise, I am getting close to building. Around the corner from that is Locale support from ICU (?), which I've got … [View More]

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Re: [Boost-users] Building boost b2 lzma options
by Michael Powell 21 Nov '17

21 Nov '17

Next errors seem to be lzma related. Is this along the same lines as with Zlib and bzip2? To avoid confusion, this is 1.65.1, as well; not the announced 1.66. Thanks! On Mon, Nov 20, 2017 at 1:41 PM, Nelson, Erik - 2 via Boost-users <boost-users(a)lists.boost.org> wrote: > Michael Powell Sent: Monday, November 20, 2017 1:24 PM >> >> I am building Boost and making progress. Thus far wondering what >> >> options to provide my B2. I added the zlib include path … [View More]

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Building boost b2 zlib options
by Michael Powell 20 Nov '17

20 Nov '17

Hello, I am building Boost and making progress. Thus far wondering what options to provide my B2. I added the zlib include path to the include="...;/path/to/zlib;...", and now seems to be wanting the LIB path? LINK : fatal error LNK1181: cannot open input file 'z.lib' LINK : fatal error LNK1181: cannot open input file 'zlib.lib' LINK : fatal error LNK1181: cannot open input file 'zll.lib' LINK : fatal error LNK1181: cannot open input file 'zdll.lib' Which option is that for B2? After that, … [View More]

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Could guys help on OpenMP odeint 'for' statement error
by Renfan Luo 20 Nov '17

20 Nov '17

Hi All I have just started an OpenMP application example in VS2017 platform (/* Boost libs/numeric/odeint/examples/openmp/lorenz_ensemble_simple.cpp). When switch on Properties->C/C++->Language->Open MP Support-> Yes (/openmp), it has a build error Severity Code Description Project File Line Suppression State Error C3016 'i': index variable in OpenMP 'for' statement must have signed integral type OpenMP-test1 c:\… [View More]

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[python::numpy] Access Violation when initializing numpy
by Christian Henning 18 Nov '17

18 Nov '17

Hi all, On Windows 10 with Visual Studio 2017 I', trying to run the following code in x64 debug configuration: #include <iostream> #include <boost/python.hpp> #include <boost/python/numpy.hpp> namespace p = boost::python; namespace np = boost::python::numpy; int main() { Py_Initialize(); np::initialize(); p::tuple shape = p::make_tuple(3, 3); np::dtype dtype = np::dtype::get_builtin<float>(); np::ndarray a = np::zeros(shape, dtype); return … [View More]

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[python] Linker error when initializing numpy
by Christian Henning 18 Nov '17

18 Nov '17

Hi all, I have the latest boost from the master branch and built everything including python. I can see that two python related libs were built: libboost_python3-vc141-mt-gd-x64-1_66.lib libboost_numpy3-vc141-mt-gd-x64-1_66.lib For compiling python I use vcpkg and it's generating python3_d.lib for debug and python3.lib for release. The cpp code I like to compile is: #include <iostream> #include <boost/python.hpp> #include <boost/python/numpy.hpp> namespace p = boost::… [View More]

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Conan-center package.
by Philippe Groarke 17 Nov '17

17 Nov '17

Are there any plans to release an official Boost package on Conan-Center? If not, any specific reason? It would really help Windows builds and facilitate enterprise adoption. Thank you & good day.

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Weird compilation error when using boost::geometry
by 邓尧 16 Nov '17

16 Nov '17

Hi, I have implemented my own "point" as specified by the point concept http://www.boost.org/doc/libs/1_59_0/libs/geometry/doc/html/geometry/refere… When I use it along with boost::geometry::model::polygon/multi_polygon, GCC refuses to compile, tested on GCC 4.9/5.2. What's even more weird is that CLANG 3.6 would happy accept my code. BTW, the Point implementation is part of a large project, it difficult to replace it with boost::geometry::model::point. Here is my code: Point.hpp > #… [View More]ifndef RAPTOR_POINT_HPP_INCLUDED_ > > #define RAPTOR_POINT_HPP_INCLUDED_ > > >> #include <boost/mpl/int.hpp> > > #include <boost/geometry/core/access.hpp> > > #include <boost/geometry/core/cs.hpp> > > #include <boost/geometry/core/coordinate_type.hpp> > > #include <boost/geometry/core/coordinate_system.hpp> > > #include <boost/geometry/core/coordinate_dimension.hpp> > > #include <boost/geometry/geometries/polygon.hpp> > > #include <boost/geometry/multi/geometries/multi_polygon.hpp> > > >> namespace raptor { > > >> template<typename T, int tDimension = 2> > > class Point { > > public: > > Point() = default; > > >> Point(T a, T b) { > > data[0] = a; > > data[1] = b; > > } > > >> Point(T a, T b, T c) { > > data[0] = a; > > data[1] = b; > > data[2] = c; > > } > > >> T& operator [] (long index) { > > return data[index]; > > } > > >> const T& operator [] (long index) const { > > return data[index]; > > } > > >> private: > > T data[tDimension]; > > }; > > >> using CubicPoint = Point<long, 3>; > > using PlanarPoint = Point<long>; > > using SphericalPoint = Point<double>; > > >> template<typename T> > > using Polygon = boost::geometry::model::polygon<T>; > > >> template<typename T> > > using PolySet = boost::geometry::model::multi_polygon<Polygon<T>>; > > >> } // namespace raptor > > >> namespace boost { namespace geometry { namespace traits { > > >> template<typename Type, std::size_t tDimension> > > struct tag<::raptor::Point<Type, tDimension>> { > > typedef point_tag type; > > }; > > >> template<typename Type, std::size_t tDimension> > > struct coordinate_type<::raptor::Point<Type, tDimension>> { > > typedef Type type; > > }; > > >> template<typename Type, std::size_t tDimension> > > struct coordinate_system<::raptor::Point<Type, tDimension>> { > > typedef boost::geometry::cs::cartesian type; > > }; > > >> template<typename Type, std::size_t tDimension> > > struct dimension<::raptor::Point<Type, tDimension>> > > : public boost::mpl::int_<tDimension> { > > // EMPTY > > }; > > >> template<typename Type, std::size_t tDimension, std::size_t tIndex> > > struct access<::raptor::Point<Type, tDimension>, tIndex> { > > static Type get(const ::raptor::Point<Type, tDimension>& p) { > > return p[tIndex]; > > } > > >> static void set(::raptor::Point<Type, tDimension>& p, > > const Type& value) { > > p[tIndex] = value; > > } > > }; > > >> }}} // namespace boost::geometry::traits > > >> #endif // RAPTOR_POINT_HPP_INCLUDED_ > > A real simple main.cpp: > #include "Point.hpp" > > >> int main() { > > raptor::Polygon<raptor::SphericalPoint> pl; > > raptor::PolySet<raptor::SphericalPoint> set; > > return sizeof(pl) + sizeof(set); > > } > > > GCC compilation error: g++ main.cpp -std=c++14 > In file included from /usr/include/boost/geometry/core/access.hpp:20:0, from Point.hpp:5, from main.cpp:1: /usr/include/boost/geometry/core/point_type.hpp: In instantiation of > 'struct boost::geometry::traits::point_type<raptor::Point<double> >': /usr/include/boost/geometry/core/point_type.hpp:66:17: required from > 'struct boost::geometry::core_dispatch::point_type<void, > raptor::Point<double> >' /usr/include/boost/geometry/core/coordinate_type.hpp:58:62: required from > 'struct boost::geometry::core_dispatch::coordinate_type<void, > raptor::Point<double> >' /usr/include/boost/geometry/core/coordinate_type.hpp:92:25: required from > 'struct boost::geometry::coordinate_type<raptor::Point<double> >' /usr/include/boost/geometry/geometries/concepts/point_concept.hpp:90:54: > required from 'class boost::geometry::concept::Point<raptor::Point<double> > >' /usr/include/boost/concept/detail/has_constraints.hpp:32:62: required by > substitution of 'template<class Model> boost::concepts::detail::yes > boost::concepts::detail::has_constraints_(Model*, > boost::concepts::detail::wrap_constraints<Model, (& Model:: constraints)>*) > [with Model = boost::geometry::concept::Point<raptor::Point<double> >]' /usr/include/boost/concept/detail/has_constraints.hpp:42:5: required from > 'const bool > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >::value' /usr/include/boost/concept/detail/has_constraints.hpp:45:31: required > from 'struct > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >' /usr/include/boost/mpl/if.hpp:67:11: required from 'struct > boost::mpl::if_<boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >, > boost::concepts::constraint<boost::geometry::concept::Point<raptor::Point<double> > > >, boost::concepts::requirement<boost::concepts::failed************ > boost::geometry::concept::Point<raptor::Point<double> >::************> >' /usr/include/boost/concept/detail/general.hpp:50:8: required from 'struct > boost::concepts::requirement_<void > (*)(boost::geometry::concept::Point<raptor::Point<double> >)>' /usr/include/boost/geometry/geometries/ring.hpp:60:5: required from > 'class boost::geometry::model::polygon<raptor::Point<double>, true, true, > std::vector, std::vector, std::allocator, std::allocator>' main.cpp:4:42: required from here /usr/include/boost/geometry/core/point_type.hpp:45:5: error: no matching > function for call to 'assertion_failed(mpl_::failed************ > (boost::geometry::traits::point_type<raptor::Point<double> > >::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE::************)(mpl_::assert_::types<raptor::Point<double>, > mpl_::na, mpl_::na, mpl_::na>))' BOOST_MPL_ASSERT_MSG ^ /usr/include/boost/mpl/assert.hpp:82:5: note: candidate: template<bool C> > int mpl_::assertion_failed(typename mpl_::assert<C>::type) int assertion_failed( typename assert<C>::type ); ^ /usr/include/boost/mpl/assert.hpp:82:5: note: template argument > deduction/substitution failed: /usr/include/boost/geometry/core/point_type.hpp:45:5: note: cannot > convert > 'boost::geometry::traits::point_type<Geometry>::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE48::assert_arg<raptor::Point<double> > >()' (type 'mpl_::failed************ > (boost::geometry::traits::point_type<raptor::Point<double> > >::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE::************)(mpl_::assert_::types<raptor::Point<double>, > mpl_::na, mpl_::na, mpl_::na>)') to type 'mpl_::assert<false>::type {aka > mpl_::assert<false>}' BOOST_MPL_ASSERT_MSG ^ In file included from > /usr/include/boost/geometry/core/coordinate_type.hpp:21:0, from /usr/include/boost/geometry/core/access.hpp:24, from Point.hpp:5, from main.cpp:1: /usr/include/boost/geometry/core/point_type.hpp: In instantiation of > 'struct boost::geometry::core_dispatch::point_type<void, > raptor::Point<double> >': /usr/include/boost/geometry/core/coordinate_type.hpp:58:62: required from > 'struct boost::geometry::core_dispatch::coordinate_type<void, > raptor::Point<double> >' /usr/include/boost/geometry/core/coordinate_type.hpp:92:25: required from > 'struct boost::geometry::coordinate_type<raptor::Point<double> >' /usr/include/boost/geometry/geometries/concepts/point_concept.hpp:90:54: > required from 'class boost::geometry::concept::Point<raptor::Point<double> > >' /usr/include/boost/concept/detail/has_constraints.hpp:32:62: required by > substitution of 'template<class Model> boost::concepts::detail::yes > boost::concepts::detail::has_constraints_(Model*, > boost::concepts::detail::wrap_constraints<Model, (& Model:: constraints)>*) > [with Model = boost::geometry::concept::Point<raptor::Point<double> >]' /usr/include/boost/concept/detail/has_constraints.hpp:42:5: required from > 'const bool > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >::value' /usr/include/boost/concept/detail/has_constraints.hpp:45:31: required > from 'struct > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >' /usr/include/boost/mpl/if.hpp:67:11: required from 'struct > boost::mpl::if_<boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >, > boost::concepts::constraint<boost::geometry::concept::Point<raptor::Point<double> > > >, boost::concepts::requirement<boost::concepts::failed************ > boost::geometry::concept::Point<raptor::Point<double> >::************> >' /usr/include/boost/concept/detail/general.hpp:50:8: required from 'struct > boost::concepts::requirement_<void > (*)(boost::geometry::concept::Point<raptor::Point<double> >)>' /usr/include/boost/geometry/geometries/ring.hpp:60:5: required from > 'class boost::geometry::model::polygon<raptor::Point<double>, true, true, > std::vector, std::vector, std::allocator, std::allocator>' main.cpp:4:42: required from here /usr/include/boost/geometry/core/point_type.hpp:66:17: error: no type named > 'type' in 'struct boost::geometry::traits::point_type<raptor::Point<double> > >' >::type type; ^ In file included from > /usr/include/boost/geometry/geometries/polygon.hpp:26:0, from Point.hpp:10, from main.cpp:1: /usr/include/boost/geometry/geometries/concepts/point_concept.hpp: In > instantiation of 'class > boost::geometry::concept::Point<raptor::Point<double> >': /usr/include/boost/concept/detail/has_constraints.hpp:32:62: required by > substitution of 'template<class Model> boost::concepts::detail::yes > boost::concepts::detail::has_constraints_(Model*, > boost::concepts::detail::wrap_constraints<Model, (& Model:: constraints)>*) > [with Model = boost::geometry::concept::Point<raptor::Point<double> >]' /usr/include/boost/concept/detail/has_constraints.hpp:42:5: required from > 'const bool > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >::value' /usr/include/boost/concept/detail/has_constraints.hpp:45:31: required > from 'struct > boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >' /usr/include/boost/mpl/if.hpp:67:11: required from 'struct > boost::mpl::if_<boost::concepts::not_satisfied<boost::geometry::concept::Point<raptor::Point<double> > > >, > boost::concepts::constraint<boost::geometry::concept::Point<raptor::Point<double> > > >, boost::concepts::requirement<boost::concepts::failed************ > boost::geometry::concept::Point<raptor::Point<double> >::************> >' /usr/include/boost/concept/detail/general.hpp:50:8: required from 'struct > boost::concepts::requirement_<void > (*)(boost::geometry::concept::Point<raptor::Point<double> >)>' /usr/include/boost/geometry/geometries/ring.hpp:60:5: required from > 'class boost::geometry::model::polygon<raptor::Point<double>, true, true, > std::vector, std::vector, std::allocator, std::allocator>' main.cpp:4:42: required from here /usr/include/boost/geometry/geometries/concepts/point_concept.hpp:93:10: > error: 'value' is not a member of > 'boost::geometry::dimension<raptor::Point<double> >' enum { ccount = dimension<Geometry>::value }; ^ Where is the problem ? or it's a GCC bug ? Thanks [View Less]

3 4

Could guys help me on a boost MPI link error
by Renfan Luo 16 Nov '17

16 Nov '17

Hi All I have built boost binary library on my PC workstation in windows 10 using VS 2017 for boost 1.65.1 successfully for application of MPI in my project. I had a simple test for MPI which worked perfectly. So I moved to a further test using boost example "odeint-v2/examples/mpi/phase_chain.cpp", which is applied to solve ODE with MPI capacity. When I tried to build the project, it gives me an error Severity Code Description Project File Line Suppression State Error LNK1112 module machine … [View More]

2 1

Boost.Chrono custom I/O
by Leo Cacciari 15 Nov '17

15 Nov '17

Hi, I'm using boost.chrono in a project and I need some non-standard input-output. First of all, I need to print days as days. Consider the following code namespace testing { typedef boost::chrono::duration<long double,boost::ratio<86400>> day; } int main(int argc,char *argv[]) { using namespace testing; day d(10.5); std::cout << "Value: " << d << std::endl; } This prints Value: 10.5 [86400/1]seconds Which is obviously right; but I'… [View More]

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[Beast] Problems in getting started with Beast
by Sharklaser Lasershark 14 Nov '17

14 Nov '17

Hello! I'm migrating a project from libcurl to Beast. I'm trying to compile http_client_async.cpp <https://github.com/boostorg/beast/blob/develop/example/http/client/async/ht…>, but 110 errors come from "file_win32.ipp" and "file_win32.hpp", mostly missing declarations and members. I'm using Visual Studio 2017 (warning level 4). Here is what I have done: 1. Downloaded and set up boost 1.65.1 according to the "getting started" tutorial <http://www.boost.org/doc/libs/1_65_1/more/… [View More]

2 1

help on how to build mpi library
by Renfan Luo 14 Nov '17

14 Nov '17

I am a new user of boost and have downloaded 1.65.1 and unzipped it to my C:\local\boost_1_65_1. Then chose the "MPI nearest neighbour coupled phase chain." Example, file "phase_chain.cpp" as my first test in VS2015, I have got a link error message "Error LNK1104 cannot open file 'libboost_mpi-vc141-mt-1_65_1.lib" . I have checked the boost root directory and sub-directories and did not this library file. Hope guys can suggest how I build mpi library and install it to windows.

3 3

Customized installation
by mahmood n 11 Nov '17

11 Nov '17

Hi, It is possible to build one or two targets instead of all? When I run ../b2 install --prefix=/somewhere It build all libraries. Assume I only want filesystem. Is that possible or they all depend on each other? Regards, Mahmood

2 1

error categories point to invalid data with boost log and asio
by priv＠mariusherzog.net 11 Nov '17

11 Nov '17

I have the following problem while using boost asio together with boost log and clang 3.9.0. When I want to print an error code for example passed to me by a asio completion handler, my program crashes. This is because the error category points to invalid data. If I put a breakpoint in get_misc_error category which is called upon program startup, the local static error category already contains junk data. When I compile with gcc 5.4.0 this error does not occur. Also if I do not link against … [View More]

1 0

[signals2] Connect to overloaded slots
by Florian Lindner 10 Nov '17

10 Nov '17

Hello, this code compiles just fine: #include <boost/signals2.hpp> #include <iostream> // void slot() { std::cout << "No args slot called." << std::endl; } void slot(int i) { std::cout << "Int " << i << " arg slot called." << std::endl; } int main(int argc, char **argv) { boost::signals2::signal<void(int)> s; s.connect(&slot); return 0; } However, when I uncomment the slot() function, it does not do so, anymore: … [View More]

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(no subject)
by giridhar 08 Nov '17

08 Nov '17

Hi Boost http://bit.ly/2hcH687 giridhar

1 0

Warning "declares a non-template function"
by mahmood n 06 Nov '17

06 Nov '17

Hi, A program needs boost > 1.58. So, I used boost-1.60 with gcc-4.8. However, as I compile the program, I get many warnings similar to /home/mahmood/boost_1_60_0/boost/mpl/set/aux_/item.hpp(47): warning: "char (&operator||(const boost::mpl::s_item<T, Base> &, boost::mpl::aux::type_wrapper<T> *))[boost::mpl::next<Base::order>::type::value]" declares a non-template function -- add <> to refer to a template instance /home/mahmood/boost_1_60_0/boost/mpl/set/aux_/… [View More]

2 1