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Re: [boost] GSOC 2015 : Project on Concurrent Hash Tables
by Amarnath V A 14 Feb '15

14 Feb '15

Hello Nial, I am a graduate student from India and I have spent some time looking into the boost GSoC page for last few days. And concurrent hash tables project has grabbed my attention. I would like to see if I am competent enough to contribute to the project. First of all, like you had mentioned in the mailing list to another prospective candidate, I have got the source code and compiled the unit tests. And they are passing as expected (as far as I understand). I have a few questions regarding the code base before I jump in try to complete the test. 1. As I have experience only on C++98, I am not sure what is the purpose of the move constructors. Reading up on internet gave me fair idea about move constructors in general. In our context, is there anything specific to be taken care? Could you provide few ideas of what is the expected result of the move? The important question I have is should the move rehash all the hashes? (Is that why you were mentioning about rehash()?) 2. Similarly, does the copy constructor need to just perform a deep copy of the hash table? Or should it also perform a rehashing? 3. Could you also point me to any white paper or publication that gave you how to go about with the implementation of concurrent_unordered_map? 4. Being a Linux user, I am using Ubuntu as my dev box. I have currently build the source code using gcc v4.8.2 and clang v3.4. Is this fine? Sorry if my mail ends up as a cross post. I am new to this list. And thanks for bearing with my (maybe silly) questions. Thanks, Amarnath

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Re: [boost] [gsoc15] Proposal
by Ganesh Prasad 13 Feb '15

13 Feb '15

The METALISCPP project was only a starter. My idea was to implement a very minimal syntactical abstraction over the metaprogramming constructs and build a prolog like library over it. As you can see, the METALISCPP simply uses macros to hide all those long template-based codes and provide an easier and more convenient syntax. The main motivation behind it was to have a library that would handle polices, inheritance, complex dependencies and such conveniently at compile time with a logic oriented syntax. Then I started thinking about extending the idea for a complete First Order Logic Programming Library and got stuck there. If you are willing to mentor it this year, we can try to improve the performance and syntactically modify the metalog library, maybe we'll end up with something as convenient as Boost::Phoenix. Best Wishes Ganesh PS I've forked metalog and trying to figure out what useful things can be done with it in 3 months time.

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Asking for boost.persistent source code
by Yichao Zhang 13 Feb '15

13 Feb '15

Hi, I ran into the boost.persistent library the other day and think it got a really neat interface, and the transactions are exactly what I had in mind when I look for a persistent library. The code is not in the sandbox, but I really would like to have a copy of it. It would be nice if the original author can drop me a tarball. Thanks in advance, Yichao

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[gsoc15] Attn: We need 2015 mentors and project ideas for Boost!
by Niall Douglas 12 Feb '15

12 Feb '15

Dear Boost community, We are now within one month of the beginning of Google Summer of Code 2015! Last year's GSoC furthered the continuing success of the Boost GSoC programme with the first ever Boost funded extension to a GSoC project (that being Boost.Hana by Louis Dionne mentored by Joel Falcou, congrats to both of them on passing an exceptionally tough selection process), and over $50,000 of Google funding brought to Boost in 2014. We also sent three representatives to last year's mentor summit, including one student whose entire expenses the Boost Steering Committee very generously covered. As part of filling in our application for 2015, we must supply to Google a list of potential GSoC mentors and potential GSoC projects for summer 2015. There are a number of changes to how we design project ideas for students this year intended to improve the GSoC experience for both students and mentors, so please examine the ideas page which outlines those changes at https://svn.boost.org/trac/boost/wiki/SoC2015 and if you have any questions or concerns about those changes, please ask now rather than just before the GSoC deadline. If you think yourself able to mentor a student doing some work on Boost this summer, *please* consider adding a description of the proposed work item and your name to the list. Last year we acquired eight slots from Google and had to disappoint two mentors and students, we hope with the improved selection process we can get back to the ten annual slots we once had. If you want to know more about mentoring a Google Summer of Code funded student work before you nominate yourself, please feel free to ask on the main Boost developers mailing list boost(a)lists.boost.org. Thank you in advance for your time. Niall Douglas (Boost Google Summer of Code admin) Boris Schäling (Boost Google Summer of Code admin) --- Boost C++ Libraries Google Summer of Code 2014 admin https://svn.boost.org/trac/boost/wiki/SoC2014

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[gsoc15] Proposal
by Ganesh Prasad 12 Feb '15

12 Feb '15

Now that we are rather well ahead with the phoenix library, I propose to develop a compile-time Logic Programming library for boost. I understand that a handful of months during GSoC15 are not enough for developing a complete and usable library, but the foundations of the library can be laid during this GSoC. I have some experience with writing a small compile-time library for functional programming with a LISP like syntax. That can be found at https://github.com/GnsP/GNS--META_LISCPP . Currently I am trying to identify the requirements for a decent compile-time logic library. If it could be acceptable as a GSoC project (I don't know, the idea is pretty big one for 3 months), I'll be back with an initial design of the proposed library. Best Wishes Ganesh Prasad PS I had been planning on this library since last year, I am positive that this project is feasible (though Logic programming would require non-determinism, it can be handled to some extent with template metaprogramming, I'm still working on it).

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Re: [boost] [polygon] voronoi diagram in a bounding box
by Dan Chen 11 Feb '15

11 Feb '15

Hi Andrii, This helps. Thanks a lot! Dan

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GitHub third-party application permissions
by Vladimir Prus 11 Feb '15

11 Feb '15

Hi, the GitHub boostorg organization is configured in a way that any application authorized by any organization member will have full access to boostorg data. Is that desirable? I've noticed accidentally, and don't know much about github permission model, but it seems that all authorized applications will have access to all repositories the user has, there does not appear a way to limit either repositories or operations. Comments? -- Vladimir Prus CodeSourcery / Mentor Embedded http://vladimirprus.com

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Cleanup of test results.
by Rene Rivera 11 Feb '15

11 Feb '15

Just an FYI for testers and authors.. I implemented some changes to the report generation that: a) Expires old results to not be shown in the results. I'm considering old to be anything past two weeks of age. This applies to all branches (i.e. develop and master). b) Filtering of master, aka release, results to only include an approved list of testers. This brings in some explicit control to what is considered the release toolsets. Which is something we used to enforce, but lost after the git transition. So it's back now. Rene. -- -- Rene Rivera -- Grafik - Don't Assume Anything -- Robot Dreams - http://robot-dreams.net -- rrivera/acm.org (msn) - grafikrobot/aim,yahoo,skype,efnet,gmail

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[GSoC 2015] Boost Document library development
by amitoj singh 11 Feb '15

11 Feb '15

Hello, My name is Amitoj Singh. I am pursuing B.Tech form Guru Nanak Dev Engineering college. I would like to work on Boost Document library Development. Can I have a more details on this project so that I can submit my first patch. Thanks! Regards! -- "Never repeat yourself" Amitoj singh slideshare.com/amitoj95 github.com/amitojsingh amitojsworld.wordpress.com

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Re: [boost] [polygon] voronoi diagram in a bounding box
by Dan Chen 10 Feb '15

10 Feb '15

Hi Andrii, I'm implementing a Lloyd's algorithm to get a centroidal Voronoi tessellation of a box. In this algorithm, I need to get the voronoi cells in the box, and find the centroids of these cells. Thanks,Dan

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