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Boost 1.65.2 Release Candidate 2
by Daniel James 03 Sep '17

03 Sep '17

The second release candidates for the 1.65.1 release are now available at: <https://dl.bintray.com/boostorg/release/1.65.1/> The SHA256 checksums are as follows: df7bea4ce58076bd8e9cd63966562d8cf969b431e1c587969e6aa408e51de606 boost_1_65_1_rc2.7z 9807a5d16566c57fd74fb522764e0b134a8bbe6b6e8967b83afefd30dcd3be81 boost_1_65_1_rc2.tar.bz2 a13de2c8fbad635e6ba9c8f8714a0e6b4264b60a29b964b940a22554705b6b60 boost_1_65_1_rc2.tar.gz d1775aef807bd6a14077b450cce2950d8eacd86aaf51015f79e712917f8cc3c2 boost_1_65_1_rc2.zip As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy.

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[release] Boost 1.65.1 Release Candidate 1
by Daniel James 01 Sep '17

01 Sep '17

The release candidates for the 1.65.1 release are now available at: <https://dl.bintray.com/boostorg/release/1.65.1/> The SHA256 checksums are as follows: 9b440d8167043c8d70326d8a5d4df98a59abb40be7d68f51e75ea95ea24d84f3 boost_1_65_1_rc1.7z fbd5663c748a88479adb4106c8a12009b149e602dec4b40a4a778381a33cf3ce boost_1_65_1_rc1.tar.bz2 b1b18d658cc0ff8a5030b29f4ed41de1826281fcb52fc1073b106c5802a570bd boost_1_65_1_rc1.tar.gz 542624352b2c3fd6a76c98624f90d2c0e62dd810ec6cc9fdae831677c7aa1fbf boost_1_65_1_rc1.zip As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy.

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Help on boost::iostreams::gzip_compressor: Linker error
by Uthpal Urubail 31 Aug '17

31 Aug '17

Experts, I am getting below linker error on gzip compressor usage. Any help is highly appreciated. I have already tried linking boost_iostreams.lib & zlib.lib Code Description LNK2001 unresolved external symbol "int const boost::iostreams::zlib::default_compression" (?default_compression@zlib@iostreams@boost@@3HB) & Code Description LNK2019 unresolved external symbol "protected: __cdecl boost::iostreams::detail::zlib_base::~zlib_base(void)" (??1zlib_base@detail@iostreams@boost@@IEAA@XZ) referenced in function "int `public: __cdecl boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::zlib_compressor_impl<class std::allocator<char> >(struct iostreams::detail::zlib_params const &)'::`1'::dtor$0" (?dtor$0@?0???0?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QEAA@AEBUzlib_params@23@@Z@4HA) Regards, UJ

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UDP Echo Server
by Mark Hieber 25 Aug '17

25 Aug '17

Hi,

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[fiber][asio] Problem running http://www.boost.org/doc/libs/1_65_0/libs/fiber/examples/asio/autoecho.cpp
by Mark Hieber 24 Aug '17

24 Aug '17

Hi, I am using cmake 3.9.1 and Boost 1.65.0. I have downloaded the autoecho.cpp file and the corresponding yield.hpp, detail/yield.hpp and round_robin.hpp from http://www.boost.org/doc/libs/1_65_0/libs/fiber/examples/asio. When I run my program (just these 4 files, with no modifications), I get this output: Thread A: started Thread A: A0: echo-server started Segmentation fault Using print statements the seg-fault happens in the io_svc->run(); call. If anyone can help me with this, I would appreciate it. BTW, I am running on Ubuntu 16.04.3 LTS Thanks, Mark

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Portable file I/O with system error codes support
by Oleg Andriyanov 23 Aug '17

23 Aug '17

Hi, I'm looking for a portable way to open a file, read some data from it, and do a proper error reporting in case of error. Apparently std::fstream is not suitable for this task because it does not provide means to retrieve original error code or even some human readable description of what went wrong (checking errno does not count since the standard does not guarantee it is set by any functions in std::fstream). I'm wondering if boost::iostreams can do that, but I've found nothing this far that could help in getting the error code. I've also tried boost::filesystem::fstream, but no luck. Users of large frameworks like Qt have advantage of their portable wrappers for file I/O like QFile. Are there any means in Boost which provide similar functionality? Related StackOverflow question: https://stackoverflow.com/questions/45840686/portable-way-to-read-a-file-in… Thanks.

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[release] Boost 1.65.0
by Daniel James 21 Aug '17

21 Aug '17

Release 1.65.0 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 two new libraries and numerous enhancements and bug fixes for existing libraries. For details, including download links, see <http://www.boost.org/users/history/version_1_65_0.html> You can also download directly from: <https://dl.bintray.com/boostorg/release/1.65.0/> To install this release on your system, see <http://www.boost.org/doc/libs/release/more/getting_started/index.html> Thanks to everyone who participated in this release. Thanks, -- The Boost Release Team Vladimir Prus, Rene Rivera, Marshall Clow, Eric Niebler, Daniel James, Beman Dawes

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Is there a C++ implementation for numerical quadrature/cubature?
by Easior Lars 20 Aug '17

20 Aug '17

Hi, all in the list! I need some functions to handle numerical quadrature/cubature in C++. I found that only few packages, e.g. GSL, could do this end. However, those ones are not pure C++ implementations. Although, odeint package in Boost can partially satisfy my need. I want to know whether there is a C++ implementation for numerical quadrature/cubature in Boost. Any suggestion? -- Best wishes, Easior ------ "It was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to heaven, we were all going direct the other way - in short, the period was so far like the present period, that some of its noisiest authorities insisted on its being received, for good or for evil, in the superlative degree of comparison only." TALES OF TWO CITIES, by Charles Dickens

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[Boost][Container] Why is flat_set default constructor explicit?
by dariomt＠gmail.com 17 Aug '17

17 Aug '17

Hi all, I just found out that all Boost.Container default constructors are implicit (just as I would expect) except for flat_set. Quoting from [1]: explicit flat_set() noexcept(/*snip*/); Effects: Default constructs an empty container. Why is flat_set different than the other containers? Is this an oversight? FWIW this issue is breaking my C++14 code (for both clang and gcc) when switching from std::set to boost::container::flat_set, minimal repro follows: #include <boost/container/flat_set.hpp> #include <set> #ifndef USE_STD_SET using S = boost::container::flat_set<int>; #else using S = std::set<int>; #endif struct A { int i; S s; }; int main() { A a1; // OK A a2 {0, {{}} }; // OK A b1 {}; // FAILS A b2 {0}; // FAILS A b3 {0, {}}; // FAILS } A f() { return {}; // FAILS } Using Bost 1.64.0 in case that matters. Any help appreciated. [1] http://www.boost.org/doc/libs/1_64_0/doc/html/boost/container/flat_set.html…

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Re: [Boost-users] Boost 1.65.0 Release Candidate 4
by Marshall Clow 17 Aug '17

17 Aug '17

On Wed, Aug 16, 2017 at 8:33 PM, Marshall Clow <mclow.lists(a)gmail.com> wrote: > The fourth (and hopefully final) release candidates for the 1.65.0 release > are now available at: > > https://dl.bintray.com/boostorg/release/1.65.0/source/ > [snippage] As always, the release managers would appreciate it if you download > the candidate of your choice and give building it a try. Please report > both success and failure, and anything else that is noteworthy. * Builds successfully with Apple Clang [Apple LLVM version 8.0.0 (clang-800.0.42.1)] with C++03/11/14/1z * Builds successfully with Clang Trunk [clang version 6.0.0 (trunk 310587)] with C++03/11/14 * Built successfully with Clang Trunk [clang version 6.0.0 (trunk 310587)] with C++1z except for Boost.Locale. -- Marshall

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