February 2019 - Boost - lists.preview.boost.org

Regression tests broken
by Tom Kent 19 Feb '19

19 Feb '19

All- Sometime around 7pm yesterday (2-17) a commit went in (master and develop?, regression scripts?) that broke all my regression runners (linux and windows). I haven't had a ton of time to dig in, but the end of the results look like this: notice: using boost library auto_config <layout>system ../libs/contract/test/Jamfile.v2:417: Unescaped special character in argument <define>BOOST_CONTRACT_ON_MISSING_CHECK_DECL="{ throw err(); }" notice: [libjpeg] Using pre-installed library notice: [libjpeg] Condition notice: [zlib] zlib is already configured notice: [libpng] Using pre-installed library notice: [libpng] Condition notice: [libtiff] Using pre-installed library notice: [libtiff] Condition /var/boost/run/boost_bb/src/build/feature.jam:447: in extend-feature from module feature error: coverage is already associated with the "<variant>" feature /var/boost/run/boost_bb/src/build/feature.jam:624: in feature.extend from module feature /var/boost/run/boost_bb/src/tools/features/variant-feature.jam:79: in variant from module variant-feature ../libs/histogram/Jamfile:15: in modules.load from module Jamfile</var/boost/run/boost_root/libs/histogram> /var/boost/run/boost_bb/src/build/project.jam:372: in load-jamfile from module project /var/boost/run/boost_bb/src/build/project.jam:64: in load from module project /var/boost/run/boost_bb/src/build/project.jam:109: in load-parent from module project /var/boost/run/boost_bb/src/build/project.jam:513: in initialize from module project /var/boost/run/boost_bb/src/build/project.jam:348: in load-jamfile from module project /var/boost/run/boost_bb/src/build/project.jam:64: in load from module project /var/boost/run/boost_bb/src/build/project.jam:142: in project.find from module project Jamfile.v2:122: in run-tests from module Jamfile</var/boost/run/boost_root/status> Jamfile.v2:196: in modules.load from module Jamfile</var/boost/run/boost_root/status> /var/boost/run/boost_bb/src/build/project.jam:372: in load-jamfile from module project /var/boost/run/boost_bb/src/build/project.jam:64: in load from module project /var/boost/run/boost_bb/src/build/project.jam:142: in project.find from module project /var/boost/run/boost_bb/src/build-system.jam:618: in load from module build-system /var/boost/run/boost_bb/src/kernel/modules.jam:295: in import from module modules /var/boost/run/boost_bb/src/kernel/bootstrap.jam:139: in boost-build from module /var/boost/run/boost_root/boost-build.jam:17: in module scope from module Any thoughts? Tom

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[Asio][ssl] develop broken
by Damian Jarek 18 Feb '19

18 Feb '19

After the changes today (introduced in https://github.com/boostorg/asio/commit/0568d3bf0b492887c6c48d05f5492a782da… ) an overload of async_handshake( https://github.com/boostorg/asio/blob/develop/include/boost/asio/ssl/stream…) fails to compile because of the signature mismatch in async_result. This is a show-stopper, because it breaks quite a bit of code in Beast.

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Searching and Sorting algorithms
by Siddhartha Sen 18 Feb '19

18 Feb '19

Sorry for the typo. I meant "generic", not genetic. Anyways, I went through the non-mutating algorithms section and can't think of anything to possibly add. I had three questions though: 1. Is there any interest in libraries aimed at solving any small but particular problem, for example, say tower of hanoi in minimum possible time? 2. For any existing algorithm, if we add some features would it be useful? For example, as far as I know, binary search returns true if an element is found and false, if not. What if we add the elements position if found? Does not change complexity, but makes it better to use,doesn't it? 3. I want to contribute to the sorting algorithms library as well, any idea where to start? Is there any scope for improvement of any existing algorithms? Also, if we want to add any entirely new algorithms of our own, any suggestions where to start? I am working on an algorithm currently and was hoping to propose it to the boost libraries. Sorry if my post got too lengthy. Any help would be appreciated. Thank You.

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[Asio] develop broken on Windows
by Vinnie Falco 18 Feb '19

18 Feb '19

This program fails to compile on Windows: #include <boost/asio.hpp> int main() { return 0; } Regards

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Searching Algorithm
by Siddhartha Sen 17 Feb '19

17 Feb '19

Looking to contribute to the sorting library under algorithms. Any mentors available? Also, is their any interest in searching algorithms? I looked up the boost libraries but couldn't find any. Are there any mentors available? I want to make a searching library which will be genetic in nature and applicable for all data types. Any guidance would be appreciated. Thanks. Siddhartha

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building, debugging and contributing to an individual boost library
by Sean Farrow 17 Feb '19

17 Feb '19

Hi, Once I have forked an individual boost library, what is the best way of building the library with b2? How are dependencies on other libraries handled? Secondly, how can I build, run and debug tests using visual studio? Any help appreciated. Kind regards Sean.

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New user need guidance.
by SHREYANS JAIN 17 Feb '19

17 Feb '19

Hi I am Shreyans Jain. I am new to opensource programming, can anyone guide me how to start contributing here. Thank You

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Re: [boost] Mail list is poorly indexed by Google
by Nikita Kniazev 15 Feb '19

15 Feb '19

> > Indeed! Google stopped indexing January 2017. Strange, I linked mid-December thread, if crawlers stopped indexing in January there was more than two weeks to index it, is not it?

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String Algorithms
by Siddhartha Sen 14 Feb '19

14 Feb '19

Hi, I would like to contribute to the string algorithms library for GSOC 2019. Are there any potential mentors to pair up with? I am also interested in algorithms in general, especially sorting and searching libraries. Is there any scope for contribution there as well? Any answers would be appreciated

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Mail list is poorly indexed by Google
by Nikita Kniazev 13 Feb '19

13 Feb '19

I was going to find the https://lists.boost.org/Archives/boost/2018/12/244648.php thread, but it did not worked with Google (looked all the pages <https://www.google.com/search?q=dropping+support+for+msvc+9+site%3Alists.bo…>), while DuckDuckGo shows it as the first link <https://ddg.gg/?q=dropping+support+for+msvc+9+site%3Alists.boost.org>. Can webmasters look into this with the Google's Search Console <https://search.google.com/search-console/about>? Or it is a policy to supplant the all-embracing Google? :-)

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