March 2010 - Boost - lists.boost.org

Re: [boost] GSOC - Boost Libraries - BIGING
by swagat konchada 23 Mar '10

23 Mar '10

Hello everyone! On Tue, Mar 23, 2010 at 2:20 AM, Andrew Sutton <andrew.n.sutton(a)gmail.com>wrote: > > Hi Swagat, > > We are glad that you are interested in submitting a proposal for Boost in > this year's GSoC program. However, it's hard to comment on your proposal > unless you provide details about what you intend to do over the course of > the summer. GSoC is a very competitive program, and Boost is particularly > selective about awards. > > Please see [1] for ideas on how to write a good proposal. > > Thanks to Andrew Sutton for his kind reply and the relevant link. They have been of great use to me. I had a look around in the Boost Sandbox and I found a BigInt implementation done by zeux during GSoC 07. I had a look at the code and I wanted to know its deficiencies. I'm interested in proposing a BigDecimal implementation that is building on this code. There are 2 questions that I wanted to ask the list before moving further on this track: 1. Is there sufficient interest for a BigDecimal proposal on the lines of the Java implementation of BigDecimal (or has there been some prior work that can be used as a foundation?) 2. What are the deficiencies of BigInt that have prevented its inclusion into the Boost distribution so as to address the same as part of my GSoC proposal. Thanking you, Yours sincerely, -- Problem is a phenomenon indicating lack of thought. Swagat Konchada

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[log] Boost.Log formal review closing down
by Vladimir Prus 23 Mar '10

23 Mar '10

Boosters, just a a friendly reminder that the formal review of the Boost.Log library, written by Andrey Semashev, is nearly the end, with about 24 hours remaining. If you planned to submit a review but have not done so, it's just about the time! The documentation for the current version is available at: http://boost-log.sourceforge.net The downloads are at: http://sourceforge.net/projects/boost-log Here are the important points: 1. All comments are appreciated. Even if you don't have the time for in-depth study of everything, comments on parts of the library are welcome. In particular, if you are already using logging in your applications and have specialized requirements, you might want to directly check how the proposed library handles them. 2. The reviews and all comments should be submitted to the developers list, boost(a)lists.boost.org and the email should have "[log]" prefix in the subject to make sure it's not missed. The deadline for reviews is 23:59, March 17, PST = 2:59, March 18, EST = 7:59 March 18, GMT = 10:59, March 18 MSK 3. Please explicitly state in your review whether the library should be accepted. 4. The general review checklist is provided below: - What is your evaluation of the design? - What is your evaluation of the implementation? - What is your evaluation of the documentation? - What is your evaluation of the potential usefulness of the library? - Did you try to use the library? With what compiler? Did you have any problems? - How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? - Are you knowledgeable about the problem domain? Thanks, Volodya

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GSoC 2010 idea
by Viktar Sialiuk 23 Mar '10

23 Mar '10

Dear the Boost developers, I'd like to participate in GSoC 2010 event. Could you please review my idea. I very much appreciate your opinion about this. We have ability to generate OOP wrappers by the XSD schema in the popular languages( such as Java or C#) but have not in the C++. With such a tool we will be able to generate C++ classes or structures with functionality of serialization/deserialization from/to XML. Implementation of SOAP webservice client will be easy task( or writing webservice itself). We can create tool (for example xsd2cpp) under boost.xml library and include it to the boost.build. Thanks, Viktar Sialiuk

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[GSoC] Introduction and questions
by Felipe Tanus 23 Mar '10

23 Mar '10

Hi, My name is Felipe Tanus and I would like to participate (for the first time) of GSoC in this project, specifically in the boost.process library. While my proposal is not ready, you can check a little about me in my website[1]. I already downloaded and had a look in the code, and read the documentation provided. This turned me even more excited about the project. To be able to do a proper schedule and define milestones, I need to study more about of POSIX and Windows process architectures, and what the APIs let me to do. For this, I have been reading some man pages (unistd, signal...) and the MSDN documentation. My first question about this project is exactly about that: Do you have any suggestions about where can I find out about this matter? I would like it to be from a reliable source. You can reach me in IRC, on freenode's boost channel as "fotanus", and by this e-mail. Thanks in advance, -- Felipe de Oliveira Tanus E-mail: fotanus(a)gmail.com Blog: http://www.itlife.com.br [1]: Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf

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[Boost][Gsoc 2010] Boost.Graph project
by Jakub Tlałka 23 Mar '10

23 Mar '10

Hello, I would like to engage in the Boost.Graph project. I have an idea of a graph architecture for simulating various processes in networks. I think it would be useful in the Network Workbench. It would consist of network graph generator. It is something like topology generator, but apart from inducing topologies, It should also induce given features characteristic to a certain network (ie density, or distribution of some vertices parameters over a graph). In addition there would be some iterate function, that would simulate the processes given by some dependencies between vertices or edges. That's the simple draft of the idea. I don't have much experience in this kind of projects so I'm not quite sure about the possibility/necessity of the idea. I'm interested in graph theory, I have algorithmic experience connected with Informatics Olympiad and I'm ready to spend my time expanding the boost library. I'm also ready to engage in the other listed problems regarding Boost.Graph. I would be very grateful for every comment, this is my second open source project and I'm willing to gain my experience in this field, and contribute not necessarily in connection with gsoc. Best wishes, Jakub Tlałka

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Thread-safe singleton pattern
by Andrew Chinkoff 22 Mar '10

22 Mar '10

I propose thread safe singleton pattern implementation (see http://www.research.ibm.com/designpatterns/pubs/ph-jun96.txt) I have attached "singleton.hpp" to this letter. Below is the test program: #include <stdio.h> #include <singleton.hpp> class A : public boost::Singleton<A> { // // Only Singleton class can create and delete us! // SINGLETON_IS_MY_FRIEND; public: void foo(){ printf("foo!\n"); } A(){ printf("A()\n"); } ~A(){ printf("~A()\n"); } }; void main() { // It is not compiled: //A a = A::Instance(); // That is exactly as it should be used: A::Instance().foo(); } Test program outputs: A() foo! ~A() My question: Does Boost community think that boost::Singleton is convenient (or successful) solution?

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Re: [boost] GSOC - Boost Libraries
by Andrew Sutton 22 Mar '10

22 Mar '10

> I am Swagat and C++ is my passion. > Hi Swagat, We are glad that you are interested in submitting a proposal for Boost in this year's GSoC program. However, it's hard to comment on your proposal unless you provide details about what you intend to do over the course of the summer. GSoC is a very competitive program, and Boost is particularly selective about awards. Please see [1] for ideas on how to write a good proposal. Andrew Sutton andrew.n.sutton(a)gmail.com [1] https://svn.boost.org/trac/boost/wiki/SoCHints

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Questions about Graph Project
by Liang Dong 22 Mar '10

22 Mar '10

Hi, I am reading the Graph Project's source code. I find there are page rank algorithm, but there is no HITS algorithm and samba. I am curious that if this would be a good topic or everyone just endorse pagerank? best, Liang Dong

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[log] std::endl manipulator does not work, intentional
by Andreas Huber 22 Mar '10

22 Mar '10

Hi Andrey On VS2008, this code ... #include <boost/log/trivial.hpp> #include <ostream> int main() { BOOST_LOG_TRIVIAL(trace) << "This is a" << std::endl << "multiline message"; return 0; } ... fails compilation with the following error: error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'overloaded-function' (or there is no acceptable conversion) Now I do realize that "\r\n" would be a better choice here, as the flushing that comes with std::endl is not necessary. However, some developers in our team seem to prefer std::endl nevertheless. So, the question is: Is this intentional or just an oversight? BTW, only std::endl, std::ends and std::flush don't work, all the other manipulators do. Thanks, -- Andreas Huber When replying by private email, please remove the words spam and trap from the address shown in the header.

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GSOC - Boost Libraries - BIGINT
by swagat konchada 22 Mar '10

22 Mar '10

Hello! I am Swagat and C++ is my passion. I am a student at IIT Roorkee. I would love to work for Boost libraries in GSOC or any other manner. I came to know about GSOC recently. I hope I am not late. Though I initially thought of working for cppnetlib, after seeing the ideas given in the boost gsoc’10 page, I think the project I would like to work the most would be to implement BigInt. I have suffered many times trying to work with big integers, though some code is available on the Internet. A standardized library for BigInt if made enough programmer-friendly would be wonderful. As a programmer who often participates in online competitions, BigInt feature would have been of great use to me and working on it would be more than fun! Also I am free for the summer when I would be staying at my campus the whole time, without distractions. I have attached my resume above. Please comment. ---------------------------------------------------------------------------- A problem is a phenomenon indicating lack of thought. http://letmeseeswagat.blogspot.com/

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