- Boost - lists.preview.boost.org

Building Boost (1.60) with Clang and NDK
by Fatih Kıralioğlu 06 Jan '16

06 Jan '16

Has anyone built the Boost with Clang and NDK other than CryStax? If so, can you post the related config.jam and build script? I have handled gcc build but clang is very very chalnllenging and no one including the guys in Stackoverflow could answer it. Many Thanks. Fatih

4 3

[multiprecision] Creation from a range
by Fernando Pelliccioni 06 Jan '16

06 Jan '16

Hi John, hi all, Is there any way to create an Integer (or a number) from a range (bounded or counted)?; or from a string_view (string_ref)? Roughly speaking, something like: XintXXX_t make_from_bounded_range(I f, I l); XintXXX_t make_from_counted_range(I f, size_t n); If not exist, I can make a contribution, are you interested? Thank you very much and best regards, Fernando Pelliccioni.

3 3

[gsoc16] Re: Potential contribution scenarios?
by Miguel Coimbra 06 Jan '16

06 Jan '16

> It is not hard to find either myself or Antony. Both of us are here, > and both of us are at the top of Google search results for our names. Probably my bad, I only bumped into LinkedIn references. I'll wait for a reply from Antony as well, thanks. I will explore other ideas as well. > 1. A thing Boost really could do with is a decent (optionally > mmappable) dense hash map implementation, so the hash map could > contain billions of items and mostly reside on disk yet lookups would > still be very fast. I have some questions regarding this first idea. I believe a concept and implementation already exist and are actually in use at Google: http://goog-sparsehash.sourceforge.net/doc/dense_hash_map.html Quoting from that page: ** dense_hash_map is distinguished from other hash-map implementations by its speed and by the ability to save and restore contents to disk. On the other hand, this hash-map implementation can use significantly more space than other hash-map implementations, and it also has requirements -- for instance, for a distinguished "empty key" -- that may not be easy for all applications to satisfy. This class is appropriate for applications that need speedy access to relatively small "dictionaries" stored in memory, and for applications that need these dictionaries to be persistent." ** So what you want is something like this, but able to "contain billions of items and mostly reside on disk yet lookups would still be very fast"? I assume the "billions of items" is what is lacking from that dense_hash_map already in use by Google? Is this the difference between that and your idea? Assuming this is indeed what you were proposing, would the work encompass defining an API and also exploring mmap for lazy iteration for performance gains in the context of handling billions of items? Kind regards, Miguel E. Coimbra

2 1

Hi! Want to Contribute
by shubham tibra 06 Jan '16

06 Jan '16

Hello everone, I am Shubham Tibra, a student of IIT KHARAGPUR, INDIA and new to open source community. I can code in C, C++ and I would like to contribute in Boost C++ Libraries. Can someone help me in getting started? Thanks in advance.

2 1

Regarding Contribution to boost C++ Libraries
by Kanika Midha 06 Jan '16

06 Jan '16

Hello All, I am a third year undergraduate student. I am new to open source and I want to participate in GSOC with Boost C++ Libraries. Can anyone guide me on how to move forward with this. Thanking You, With Best Regards, Kanika Midha

2 1

C++Now 2106 Call for Submission
by Jon Kalb 06 Jan '16

06 Jan '16

Boost Developers, The Call for Submissions for C++Now 2016 (AKA BoostCon) has been released: http://cppnow.org/2016-conference/announcements/2015/11/17/call-for-submissi on.html The deadline for submitting is very near and cannot be extended, so don¹t delay your submission. The conference will be held in Aspen the week of May 9th. See you in Aspen! Jon

4 3

[Locale] MSVC 2015 facets issue
by Artyom Beilis 04 Jan '16

04 Jan '16

Hello, Today I had a discussion on this ticket https://svn.boost.org/trac/boost/ticket/11878 There was a basic issue with Boost.Locale that couldn't format numbers at all properly, after back and forth it was discovered an issue with MSVC library. https://svn.boost.org/trac/boost/ticket/11878#comment:10 What is the best way to address this issue (open a bug there is no github issue tracker on this :-) ... Thank You, Artyom Beilis

3 3

GSoC project Concurrent Hash Tables
by Shangtong Zhang 04 Jan '16

04 Jan '16

Hi Niall Douglas, I’m a senior student and want to take part in GSoC 2016. I’m interested in the project Concurrent Hash Tables in GSoC 2015 ideas, is it still available in GSoC 2016? I just found some links are invalid in the project description https://svn.boost.org/trac/boost/wiki/SoC2015 <https://svn.boost.org/trac/boost/wiki/SoC2015> Thanks, Shangtong Zhang, Senior Student, School of Computer Science, Fudan University, PRC.

2 1

Problems building Boost libraries for Windows Store when C++/CX is involved
by Mikael Olenfalk 04 Jan '16

04 Jan '16

Hi, I am working on porting the boost libraries we depend on to winrt, most porting is rather straightforward (basically switch from win32 apis which are 20 years old to apis which are 15 years old :D ). However I have hit a bit of a problem when compiling Boost.Log. Boost.Log depends on Boost.Asio which uses C++/CX to call some of the newer Store APIs (Windows::Networking and friends). When I build I get these errors: compile-c-c++ ..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj dump_ssse3.cpp ..\..\..\libs\log\src\dump_ssse3.cpp: fatal error C1107: could not find assembly 'platform.winmd': please specify the assembly search path using /AI or by setting the LIBPATH environment variable call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 store >nul cl /Zm800 /ZW /EHsc -nologo @"..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj.rsp" (As you can see I have monkey-patched msvc.jam to append the "store" argument to vcvarsall.bat - to no avail :( -- the monkey-patch is here if you want to look at it: https://github.com/mauve/build/commits/universal-windows-boost-1.59.0 ) The @response file looks like this: "..\..\..\libs\log\src\dump_ssse3.cpp" -Fo"..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj" -TP /Z7 /Od /Ob0 /W3 /GR /MDd /Zc:forScope /Zc:wchar_t /wd4675 /EHs /arch:SSE2 /bigobj /wd4003 /wd4456 /wd4459 /wd4503 -c -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1 -DBOOST_DATE_TIME_DYN_LINK=1 -DBOOST_FILESYSTEM_DYN_LINK=1 -DBOOST_LOG_BUILDING_THE_LIB=1 -DBOOST_LOG_DLL -DBOOST_SPIRIT_USE_PHOENIX_V3=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_DONT_USE_CHRONO=1 -DBOOST_THREAD_USE_DLL=1 -DDATE_TIME_INLINE -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x0603 "-I..\..\.." Regards, Mikael

4 10

Generic type inferencer function?
by Nat Goodspeed 04 Jan '16

04 Jan '16

Our code has any number of instances of this pattern: template <typename T, typename U> class SomeTemplate { SomeTemplate(const T& t, const U& u); ... }; template <typename T, typename U> SomeTemplate<T, U> make_SomeTemplate(const T& t, const U& u) { return SomeTemplate<T, U>(t, u); } Am I overlooking a generic boost::make<something>() of this general form? template <template<typename...> class CLASS_TEMPLATE, typename... ARGS> CLASS_TEMPLATE<ARGS...> make(ARGS && ... args) { return CLASS_TEMPLATE<ARGS...>(std::forward<ARGS>(args)...); } If that doesn't already exist... would it be useful to add (a less naive version) somewhere?

10 18