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Formale Review: Callable Traits
by Peter Dimov 13 Apr '17

13 Apr '17

I think that the Callable Traits library should be ACCEPTED. The design of the library is sound, although I'm not fond of the ad-hoc metaprogramming part in "parameter list features". This is no fault of the author though, as without a modern type-metaprogramming library in Boost, everyone has to solve this problem in some way. Still, I think that most of these should be removed. Getting the arguments as a tuple that includes the class type as a first parameter raises the obvious question of void(foo::*)(float, char, int) -> tuple<foo&, float, char, int> void(foo::*)(float, char, int) & -> tuple<foo&, float, char, int> I understand why that is, but it still makes args lossy and the original can't be recreated from the tuple. Trailing varargs also have the same problem, as (float) and (float, ...) map to the same tuple. The obvious theoretically consistent approach here is void(foo::*)(float, char, int) -> tuple<foo, float, char, int> and void(float, ...) -> tuple<float, ct::varargs_t> which would be fully reversible but could possibly be less convenient in practice. I've a feeling that it might also be useful to provide an extractor that, for member pointers, returns just the arguments without the class. In "member qualifier features", I'm missing remove_member_cv_ref (obvious semantics) and copy_member_cv_ref (copies cv+ref from one member pointer to another.) In "member pointer features" we have the same problem in qualified_parent_class_of as in args, void(foo::*)() -> foo& void(foo::*)() & -> foo& It makes more sense for the first to yield 'foo', although this again may make the trait less convenient in practice. It would also _probably_ make sense to provide apply_qualified_member_pointer, which, given void(float) and foo const&, would yield void (foo::*)(float) const&. I did not look at the implementation. I ran the test suite on Windows under Cygwin g++ 5 in 11/14/1z, Cygwin clang 3.9 11/14/1z, msvc-14.0, msvc-14.1. The tests passed. Took a look at the tests themselves, the coverage looks excellent. The reference documentation is very good, although as already noted, it uses the terms of art "implementation defined" and "undefined behavior" incorrectly, this must be fixed. The non-reference portion is a bit thin. It would be improved considerably by presenting a few real-world use cases. All in all, a solid library that solves a real problem, even though the problem remains somewhat of a mystery for the uninitiated. :-)

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Libraries and C++ compliance
by Edward Diener 12 Apr '17

12 Apr '17

I would like to ask people who present new libraries to Boost, in whatever stages they are, to please specify in the documentation to the library and/or in messages regarding the library, what level of C++ compliance is needed to use the functionality of that library. This plea is not being directed at any particular current library being mentioned by anyone on the mailing list, but is a general plea regarding developers and their efforts. I realize it is a real pain that C++ as a language, and as it continues to evolve, has a number of popular levels of C++ compliance. This is largely because C++ is offered by a number of different vendors in a number of different supported releases, each particular implementation supporting a number of levels of C++ compliance and sometimes only partially supporting a particular level of C++ compliance. But given this sometimes difficult situation I do not see it as enough for library docs/information to simply say "this library supports some-vendor/some-release" because this is actually fairly meaningless to me when I know that "some-vendor/some-release" supports a number of levels of C++ compliance through some compiler parameter ( often -std=something ). Therefore docs/information of "the library supports "some-implementation" or "the library is compliant with "more than one level of C++ compliance" tells me as much as if some one told me that the moon is yellow. So I am begging, pleading, entreating library authors to be specific about the C++ features or the C++ level of compliance needed to use their library, even if it is just a one-liner that succinctly explains what the end-user needs to know. Furthermore, for any given library could we please have specific information about what will happen if I use the library, or some feature of the library, without the desired minimum level of C++ compliance. While I would assume compile-time compiler errors as the norm another possibility, especially given the excellent support in Boost Config to compiler conformance, are more readable preprocessor errors. Finally a library might offer some level of advanced C++ compliance but fall back to a lower level if possible. Please, please library authors this is important. No end-user or tester of your library wants to spend extended time trying to figure out why some compile fails when the answer turns out simply to be one of inadequate C++ conformance level for a particular compiler implementation being used with a particular level of conformance.

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Re: [boost] [proposed][histogram]
by Bjorn Reese 12 Apr '17

12 Apr '17

On 04/12/2017 11:37 AM, Hans Dembinski via Boost wrote: > The library implements a histogram class (a highly configurable policy-based template) for C++ and Python in C++11 code. Histograms are a standard tool to explore Big Data. They allow one to visualise and analyse distributions of random variables. A histogram provides a lossy compression of input data. GBytes of input can be put in a compact form which requires only a small fraction of the original memory. This makes histograms convenient for interactive data analysis and further processing. Given that the compression is lossy, I am wondering how it compares with a distribution estimator like: https://arxiv.org/abs/1507.05073v2 A common use-case when collecting numerical data is to determine the quantiles. Boost.Accumulators contains an estimator (extended_p_square) for that. The advantage of such estimators are that they execute in constant time and with constant memory usage, where the constant depends only on the required precision. PS: I am aware that this is a non-trivial question, so I do not expect an answer.

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[proposed][histogram]
by Hans Dembinski 12 Apr '17

12 Apr '17

Dear Boost community, after another year of work, I hope to raise your interest once again in a much improved version of "histogram", a library proposed for inclusion in Boost. https://github.com/HDembinski/histogram http://blincubator.com/bi_library/histogram-2/?gform_post_id=1582 The library can be build either with b2 or cmake. It compiles successfully with several versions of clang and gcc and has 99 % test coverage (the remaining 1 % are basically un-hittable branches). Boost-style documentation is available. The library implements a histogram class (a highly configurable policy-based template) for C++ and Python in C++11 code. Histograms are a standard tool to explore Big Data. They allow one to visualise and analyse distributions of random variables. A histogram provides a lossy compression of input data. GBytes of input can be put in a compact form which requires only a small fraction of the original memory. This makes histograms convenient for interactive data analysis and further processing. A histogram implements a quantisation of a space of input values. The space is divided into non-overlapping cells. Instead of remembering the exact values of a tuple in that space, one just increases a counter in the corresponding cell. This is the lossy compression, you only remember the count in the cell and not the original values. There are subtleties related to the counting if you want it to be safe and efficient. The library handles this for you. The standard policy implements intelligent counters which are fast, conserve memory, and are guaranteed to not overflow or get capped (capping happens when you use floating point numbers to count, like some implementations do). This is one of the two main feature of the library. The other main feature is that the library allows you to seamlessly create one or multi-dimensional histograms using various schemes to divide the input space. A so-called axis class handles the division into cells along each dimension. There are several ways how you might want to define the cells that divide the input space, and library offers you interesting options. For example, if one of your inputs is an angle, the library provides a special axis class for periodic input values. What's new: - Static polymorphism: The original version of the library solely used dynamic polymorphism to support different axis classes. This variant still exists, but the current version also allows you to use static polymorphism, implemented internally with boost::mpl and boost::fusion. This provides a speed-boost, which makes this library faster than the open-source competitors I tested (CERN's ROOT framework, the GSL, and numpy.histogram), in addition to the enhanced flexibility. - Arbitrary-precision counters: Counter overflow is now completely avoided by switching automatically to boost::multiprecision::cpp_int when the capacity of standard integer types is exhausted. - Extensibility: The library is now much more extensible and configurable. All relevant behaviour can be exchanged by using another (possibly user-defined) policy. The library provides default trade-offs that should work for almost everybody, but you can chose your own trade-offs. The new features were inspired by comments I got from the community. Now I am again at a point where I see the library in a very solid state. Best regards, Hans

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[gsoc17] Help review Google Summer of Code proposals
by Niall Douglas 11 Apr '17

11 Apr '17

Dear Boost, Student proposals for Google Summer of Code are submitted, please help us decide which have the most merit. I have reduced the fifty something proposals submitted down to twenty seven which have some chance. To be able to view and rank the student proposals, please do the following: 1. Send to gsoc-admin(a)boost.org your Google login. We will invite you to view the student proposals on the Boost Google Drive. Until you receive the invitation email, you won't be able to view the proposals. 2. Go to https://goo.gl/forms/EVppdHsHMnjkcUoD3 which is a Google form where you can score the proposals. We have linked each proposal there to the Google Drive item and there you can rank a proposal between 1 and 5. Make sure you use the same email as your Google login in the form, otherwise we will ignore any forms submitted to prevent gaming the results. 3. Even if you can't rank all twenty seven proposals, try to do as many as you can and then PRESS SUBMIT at the end of the form (forgetting to press SUBMIT means we never get your rankings). The proposals are presented in random order per person so any work you do will be useful. 4. Please try to have your rankings done by Monday 10th. You may find reviewing the page at https://svn.boost.org/trac/boost/wiki/SoC2017 useful. 5. Finally, if you'd like to mentor any of the proposals, send to gsoc-admin(a)boost.org your Google login so we may invite you onto the Google website as a mentor. Many thanks in advance. Niall & Bryce

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[Review Queue] SIMD Review on Hold -- Attn: wizards
by Michael Caisse 11 Apr '17

11 Apr '17

Hello Wizards - We need to postpone the review for Boost.SIMD while I compile answers to questions raised about the IP. I will report on my findings as soon as possible and either reschedule the review date or ask for the library to be removed from the queue. I apologize for the inconvenience and disruption of the queue. Take care - michael -- Michael Caisse Ciere Consulting ciere.com

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[release] 1.64.0 post-beta merges
by Rene Rivera 11 Apr '17

11 Apr '17

The master branch is is now open for post-beta merges, but only as described in the Post-Beta Merge Policy. See < https://github.com/boostorg/boost/wiki/Release-Beta-Merge-Policy> -- The Boost Release Team

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[simd] Hardware support
by Bjorn Reese 10 Apr '17

10 Apr '17

Boost.SIMD only supports x86. Are there plans for ARM NEON and/or MIPS SIMD? What does Boost.SIMD currently do on unsupported platforms? Revert back to SISD?

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[flat_set] When to sort?
by Vladimir Batov 10 Apr '17

10 Apr '17

I've been using boost::container::flat_set with quite a success until recently when I profiled my app to see that 30-50% of the run-time was spent in insert() for a container of around 50,000 in size. So, I had to replace boost::container::flat_set with a vector variation which inserts as a vector (no sorting). However, when it is the time to call begin(), end(), find(), it sorts once. That shaved the mentioned overhead off. Say, one run is down from 17s to 10s and the likes. I wonder if that should be the boost::container::flat_set default behavior rather than sorting the underlying container with every insert(). After all, as a user I do not care if the underlying container is sorted... until I start using/traversing it, right? Or maybe I am missing something in boost::container::flat_set which already allows me to do something of that sort?

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Announcing CallableTraits' formal review next week (April 3rd)
by Louis Dionne 09 Apr '17

09 Apr '17

Dear Boost community, The formal review of Barrett Adair's CallableTraits library starts Monday, April 3rd and ends on April 12th. CallableTraits is a C++11 library for the inspection, synthesis, and decomposition of callable types. CallableTraits aims to be the "complete type manipulation facility for function types" mentioned in the final paragraph of C++17 proposal P0172, and removes the need for template specializations for different function signatures. You can find the documentation of the library here: http://badair.github.io/callable_traits/doc/html/index.html and the GitHub repository here: https://github.com/badair/callable_traits We encourage your participation in this review. At a minimum, kindly state: - Whether you believe the library should be accepted into Boost - Your name - Your knowledge of the problem domain You are strongly encouraged to also provide additional information: - What is your evaluation of the library's: * Design * Implementation * Documentation * Tests * Usefulness - Did you attempt to use the library? If so: * Which compiler(s)? * What was the experience? Any problems? - How much effort did you put into your evaluation of the review? Regards, Louis

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Mathias Gaunard / NumScale relationship
by Joel FALCOU 08 Apr '17

08 Apr '17

Hi Niall, hi Andrey, I'm taking on to send you an email in private w/r to your questions on the list regarding Boost.SIMD, Mathias Gaunard and its relationship with NumScale. I'm adding Michael in CC: as he knows about the whole ordeal already and will corroborate my claims. Mathias has been one of the engineer I hired and then associate with to fund MetaScale, the company that will later become NumScale. He let the company after being ousted by one of our early investor for basically running the company into the wall and generally not knowing how to do business. He left for Bloomberg and started actually speaking about Boost.SIMD *as if* the internal information he gathered from within NumScale could be released to the public without our consent inclding internal benchmark report and road-map information. I imagine you understand why the cease&desist letter was then send. We have a bunch of other people using Boost.SIMD and they're doing fine (including other company and a bunch of OS project). I dont see why we'll be suing people using our open source software, which is different from using piece of the software he should not have. Since being laid off, Mathias kept trying to make our company and effort within open source fails by playing the victim and basically retelling history as he see fit. Also note that Mathias verbally threaten me that he will make this review a failure for us. This is the factual story of the whole thing: - 2003-2006 I worked in my PhD on something called E.V.E which was a EDSL in C++ able to supp0rot SIMD operations on PPC Altivec. - 2008 I'm now an assistant professor and work on a project called NT2 (that has been spoken about on the list a bunch of time) in collaboration with Jean-Thierry Lapresté which works on a huge amount of libm vectorisation code. Inside NT2, a remnant of E.V.E lingers and get worked on to support x86. - 2010 or some such, We start isolating the SIMD layer from NT2. At the same time, the university authorizes the release and open exploitation of NT2 as a whole in open source. NT2 and its internal soon-to-be Boost.SIMD is released under a Boost Licence. - around 2011, *I hire* Mathias to work on some part of NT2 and related project that culminates in 2012 at the creation of MetaScale. - We start speaking of NT2 and Boost.SIMD separately and it's probably around this time I raise the idea to make an actual submission to Boost. - 2014 for reasons that has no value being exposed here, Mathias leaves MetaScale and NumScale is funded to replace it. - 2015 The amount of people actively working on NT2 plummets and NumScale's team decide to reuse parts of Boost.SIMD into what bSIMD will become. - 2016 the rewrite is complete and the lack of support on NT2 make me pull the plug on the project. NumScale decide to open source back some parts of bSIMD, leaving this new Boost.SIMD made out of bSIMD be the sole remnant of this. And as your concerns goes Andrey about NumScale blocking PR or w/e coming into Boost.SIMD, The key point here is that Mathias is no longer affiliated with NumScale and has no information nor actual reason to speak on our behalf. NumScale has no plan to at short term release ITS OWN support for some architectures. This does not preclude anybody trying to undertake the effort to support an other architecture as long as yes, it is not Mathias pulling up the files we own he scavenged before leaving. We had had someone from ETH Zurich starting a port on QPX, something we also started but never finished due to other constraints. If this ever completes then, yeah it'll probably go inside the Open Source version if it's of enough good quality. We have various plan and discussion going on with different vendor and open sourcing more is planned at later date and depending on things I can not legally speak of because NDA. I'm planning to write or have Michael answer those issues publicly in a way I don't spread too much information that has nothing to do in public. I would appreciate if this line of discussion stay private for now until we address this properly in public. Meanwhile, I'm open to answer your other question. Best regards Joel

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Re: [boost] [release] 1.64.0 post-beta merges
by Oliver Kowalke 08 Apr '17

08 Apr '17

Am 08.04.2017 1:44 nachm. schrieb "Daniel James via Boost" < boost(a)lists.boost.org>: On 8 April 2017 at 10:47, Oliver Kowalke via Boost <boost(a)lists.boost.org> wrote: > > I'd like to update > > - boost.context: updating documentation regarding to property > context-switch, apply property context-switch to Jamfiles in sub-directory > example I don't know enough about boost build for this one, but the change to 'include/boost/context/execution_context.hpp' seems unnecessary. It doesn't look like it will fix anything. The patch applies property 'context-switch' to the example code Jamfiles - no need to specify it at the cmd line. The definition of property context-switch was adapted to the public APIs of boost.context.

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[gsoc17] GSoC next steps (was: Re: [gsoc2017]Satyam Pandey Copy GSoC 2017 Proposal writen by Ruoyun Jing)
by Niall Douglas 07 Apr '17

07 Apr '17

> Sorry for disturbing you at this time, I experienced a very bad thing > that Satyam Pandey, a student who sent proposal yesterday copied too > many sections of my proposal. I marked the sections red in the given > PDF.*I think the same pattern of GSoC proposal is common, and it does > not matter, but his proposal has too many same description as me. * Thank you for reporting this issue. It is unavoidable in Google Summer of Code that students copy one another and indeed sometimes pay another to write their competency test for them. We actually encourage students to study one another's applications and submit an even better application, this happened several times this year with the static map proposal. But we frown on failure to attribute sources, including failure to mention when the community or stackoverflow gave them help. And students who are later prove to be incapable of programming code at the level they advertised in their proposal are lifetime banned not just by us, but by Google. Last night I read every application and pre-eliminated half of them as I do every year so the Boost community doesn't waste their time with them. The calibre at the top this year is even higher than in past years, we have at least three truly superb candidates per project. It will be very hard to choose between them, and we will have to reject two superb candidates for no good reason other than only one student can do one project. You should see an announcement regarding community ranking soon. Watch this space. Niall

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[gsoc2017] Please review my code for Proficiency test.
by Satyam.Pandey 06 Apr '17

06 Apr '17

I have completed my Proficiency Test. Please review the code and suggest anything that you think should be improved. Here is the link to my git repository : https://github.com/sa91/ProficiencyTest I will be really glad to have your suggestions. It would be great help, if someone can suggest me some good testdata for testing my code. Thanks Satyam Pandey -- View this message in context: http://boost.2283326.n4.nabble.com/gsoc2017-Please-review-my-code-for-Profi… Sent from the Boost - Dev mailing list archive at Nabble.com.

1 0

[VS2017][release] vswhere.exe
by Mateusz Loskot 06 Apr '17

06 Apr '17

Hi, This is regarding issues with locating VS 2017 toolset(s). >From CMake ml, I learned about vswhere utility being developed by Microsoft https://github.com/Microsoft/vswhere vswhere.exe (390 KB) is downloadable from https://github.com/Microsoft/vswhere/releases I'm not sure how exactly, but perhaps it would solve some of the Boost.Build's headache (eg. particular PowerShell version required). For example, it can find all VS versions I've got installed (10.0, 11.0, 12.0, 14.0, 15.0): vswhere.exe -legacy find a particular version: vswhere -legacy -version [11.0,12.0) Best regards, -- Mateusz Loskot, http://mateusz.loskot.net

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program options - adding new functionality
by Sutera Systems 06 Apr '17

06 Apr '17

Hi all, I have just started using boost.program_options for my windows apps. I have a need to add a new functionality. I would appreciate some guidance as to how to do so. Cheers, Larry

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[mailing list] No Reply-To in messages?
by Andrey Semashev 05 Apr '17

05 Apr '17

Hi, Sometimes I can see messages from the mailing list that have no Reply-To header. For example, this is the headers from a recent email from the ML: Delivered-To: andrey.semashev(a)gmail.com Received: by 10.223.171.174 with SMTP id s43csp1184445wrc; Tue, 21 Mar 2017 04:54:11 -0700 (PDT) X-Received: by 10.233.239.75 with SMTP id d72mr28079608qkg.313.1490097251746; Tue, 21 Mar 2017 04:54:11 -0700 (PDT) Return-Path: <andrey.a.davydov(a)gmail.com> Received: from mail-qk0-x233.google.com (mail-qk0-x233.google.com. [2607:f8b0:400d:c09::233]) by mx.google.com with ESMTPS id 5si5329794qty.259.2017.03.21.04.54.11 for <andrey.semashev(a)gmail.com> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 21 Mar 2017 04:54:11 -0700 (PDT) Received-SPF: pass (google.com: domain of andrey.a.davydov(a)gmail.com designates 2607:f8b0:400d:c09::233 as permitted sender) client-ip=2607:f8b0:400d:c09::233; Authentication-Results: mx.google.com; dkim=pass header.i=(a)gmail.com; spf=pass (google.com: domain of andrey.a.davydov(a)gmail.com designates 2607:f8b0:400d:c09::233 as permitted sender) smtp.mailfrom=andrey.a.davydov(a)gmail.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmail.com Received: by mail-qk0-x233.google.com with SMTP id y76so54702989qkb.0 for <andrey.semashev(a)gmail.com>; Tue, 21 Mar 2017 04:54:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Az1Qy0ABDDY/isZXuI8r58lTLTG+E/wp0e0IliVZOAk=; b=oPSYU2baFZEWMUKF/s2hay278FTdFBfitQp4TNz5piq0zMWNqePuZaXbUD5SPP0Cnp He9gQzhynjuN/Lf4fpUtqjOWyntF2BSSrdpYbCSmaWnnSQjTz5s53EkOSVgojqHCfmVr A3CSJNK5QdAwkNAm+JQRIShSRO/YpWtK90Lhoa9lKlWF+JtIMwCgFG3h5vN1vw+W1xAB pNoHymY5rZ7Uh0WUHMlpEF/tmkD/tZzDss++3j/lKZNgX66VefCpi510BjKKkFfU2xdy zBba1I5hOOohBUzhlkYf5fSxZ1BkC6FSOizONZr1Mlx8AXLhl2MvmfW6KtR9nt9rjmSa Sfhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Az1Qy0ABDDY/isZXuI8r58lTLTG+E/wp0e0IliVZOAk=; b=OAFamTGJr76H6gmaG7LGcCRyHIp+Kj1SEs188yLqxEQGCvhYYdB8wMs6GsOYL0wYSY 9M1gYeXwexivqs+WF5Reg9CCh2mnkCUWTM6nSu9/B05sXFBUL/sVyEr7OuSXJpzVqOxl cZorectxLhbWqIqClTxYjSDNDKPJB9n+3OntHKp5l2gJY3mMPaILXbXRh6XXCMHxpYIy w1um18ndeJ0Ed7/nkhGKlzD2HvyPpkVPhjM+hhWmb+lxnVNhbpBFsoor28Yx5arAnVWb 0JndOFeqB3tfjv9DA5x/kuSStkSuG2Q439Fvd/2UuWKsqaR4JhaBejrE7jEnJgrN69on 8wfQ== X-Gm-Message-State: AFeK/H24Tvn8HI3rOm/9DXmcPc8Hok/lT3XOC2lfnuuWDiN5TsbtV56nLqNTPypggKQsasFDZvOER50I+HaBMH84 X-Received: by 10.55.15.195 with SMTP id 64mr28730703qkp.131.1490097251370; Tue, 21 Mar 2017 04:54:11 -0700 (PDT) MIME-Version: 1.0 Received: by 10.12.157.129 with HTTP; Tue, 21 Mar 2017 04:54:10 -0700 (PDT) In-Reply-To: <14065012-bde4-142d-eedf-b5fbf1f51d91(a)gmail.com> References: <CAN1iZb7pGGaFe9OKyDKxMB0Nryiqa3pxk5hLQY+1ybUCMNrZBQ(a)mail.gmail.com> <D5F339D7-3F03-4363-A2A5-F611FE8C76F0(a)gmail.com> <CAN1iZb54emhE_G9McfCmO2nN6D-qWqQSgSC-w1HdRqCAh08c8Q(a)mail.gmail.com> <14065012-bde4-142d-eedf-b5fbf1f51d91(a)gmail.com> From: Andrey Davydov <andrey.a.davydov(a)gmail.com> Date: Tue, 21 Mar 2017 14:54:10 +0300 Message-ID: <CAN1iZb6VHEUJvt9h8JN_1EubOcYponiEjdXWQGcGZ+VjU_hKJA(a)mail.gmail.com> Subject: Re: [boost] [smart_ptr] Is there any interest in unique_ptr with type erased deleter? To: boost(a)lists.boost.org Cc: Andrey Semashev <andrey.semashev(a)gmail.com> Content-Type: multipart/alternative; boundary=001a1146f4805976ff054b3c4d27 As a result, when I press Reply, the reply is addressed to the original email sender instead of the mailing list, which is really easy to miss before sending the message. Is it possible to ensure that every email from the ML contains boost(a)lists.boost.org in its Reply-To header? PS: I'm not a guru in email protocols, so if there is another more appropriate way of doing this then that would be fine with me.

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Re: [boost] Official boost macro to determine endianess?
by Frédéric Bron 05 Apr '17

05 Apr '17

> You should check the macro values instead of testing if they are defined > (i.e. use #if instead of #ifdef). Oh thanks, I have to check if it is positive. Now I get the right BOOST_ENDIAN_LITTLE_BYTE (the only one positive). Frédéric

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Re: [boost] Official boost macro to determine endianess?
by Andrey Semashev 05 Apr '17

05 Apr '17

Re-posting. On 04/05/17 16:51, Andrey Semashev wrote: > On 04/05/17 15:29, Frédéric Bron wrote: >> Sorry, I should not have used #elif, in fact ALL macros are defined! >> BOOST_ENDIAN_BIG_BYTE >> BOOST_ENDIAN_BIG_WORD >> BOOST_ENDIAN_LITTLE_BYTE >> BOOST_ENDIAN_LITTLE_WORD >> What does this mean? > > That's how Boost.Predef works: > > http://www.boost.org/doc/libs/1_63_0/doc/html/predef/using_the_predefs.html > > You should check the macro values instead of testing if they are defined > (i.e. use #if instead of #ifdef). > > Also, please, don't top-post. >

1 0

Official boost macro to determine endianess?
by Frédéric Bron 05 Apr '17

05 Apr '17

What is the official boost macro to determine endianess? And what is the header to include to get it? I cannot find any help in the documentation of boost.endian but I can find those macros by grepping in boost: BOOST_LITTLE_ENDIAN, BOOST_BIG_ENDIAN, BOOST_ENDIAN_BIG_BYTE, BOOST_ENDIAN_BIG_WORD, BOOST_ENDIAN_LITTLE_BYTE, BOOST_ENDIAN_LITTLE_WORD, BOOST_PDP_ENDIAN Thanks, Frédéric

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Re: [boost] Official boost macro to determine endianess?
by Andrey Semashev 05 Apr '17

05 Apr '17

Sent this privately by accident. Again. On 04/05/17 13:14, Andrey Semashev wrote: > On 04/05/17 12:45, Frédéric Bron wrote: >>> I think the modern way to do this is to use Boost.Predef. >> >> Great, thanks! >> >> By the way, why does the predef library not follow the boost policy >> [1] on file names, i.e. saying that header files should have .hpp >> extension and not .h? > > Because it is also usable from C. >

1 0

fix in boost/gil/channel_algorithm.hpp for clang 3.9.1
by Frédéric Bron 04 Apr '17

04 Apr '17

Hi, When compiling with clang 3.9.1, I get an error: /softs/osx32-clang-3.9.1/release/boost/include/boost/gil/extension/io/../../channel_algorithm.hpp:54:85: error: non-type template argument evaluates to -1, which cannot be narrowed to type 'unsigned long long' [-Wc++11-narrowing] struct unsigned_integral_max_value : public mpl::integral_c<UnsignedIntegralChannel,-1> {}; Patch is attached. Frédéric

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Re: [boost] [gsoc2017]Satyam Pandey Copy GSoC 2017 Proposal writen by Ruoyun Jing
by Ruoyun Jing 03 Apr '17

03 Apr '17

*NO ! I REJECT !* *Plagiarism is plagiarism!* 2017-04-03 19:04 GMT+08:00 Satyam Pandey <satyampandey0009(a)gmail.com>: > Sorry for using such harsh words earlier. I'm little frustrated now, I > really want to work in this project and I did not start earlier so , I have > to complete everything in a hurry. As yours and mine background was very > similar (professionally (i.e we do competitive and all)). I used your > proposal as a reference for preparing mine. I would have really thanked > you if you would have helped me to make my proposal better as anyhow we are > working on different projects, so it does not matter even if our proposal > have some similarity. We could have helped each other rather than making > all this mess. > > Thanks > Satyam Pandey > > > On Apr 3, 2017 3:37 PM, "Ruoyun Jing via Boost" <boost(a)lists.boost.org> > wrote: > > Hi Boost, Vissarion, Adam, Niall, David > > Sorry for disturbing you at this time, I experienced a very bad thing that > Satyam Pandey, a student who sent proposal yesterday copied too many > sections of my proposal. I marked the sections red in the given PDF.* I > think the same pattern of GSoC proposal is common, and it does not matter, > but his proposal has too many same description as me. * > > And I received two emails from google docs. I will transmit these two > emails in the following emailsThe meaning of one email is Satyam Pandey do > a replace:replace “Dev Environment Visual Studio for C# development Eclipse > for JAVA development Code Blocks, Sublime T…” to“`+” > > The meaning of another email is Satyam Pandey reject the comment of > "Proposal" from his own, replace “Dev Environment Visual Studio for C# > development Eclipse for JAVA development Code Blocks, Sublime T…” to“`+” > > I sent an email to him, but he did not think he did the copy work. But the > actually thing is* he forked the whole proposal and then change some words > to fix his condition.* > > 2017-04-03 7:42 GMT+08:00 Satyam Pandey <satyampandey0009(a)gmail.com>: > > > Hello Ruyong, > > I just wanted to explain my part here. I did not copy as per what I > > understand.I have tried answering your queries.I hope you will read it > > calmly and would try to understand. > > > > > > 1. As far as I could guess we share similar background of competitive > > programming and have no experience in contributing to any large orgs > . So I > > used your proposal as reference for writing my proposal. > > > > > > 1. Our Programming interest are same cause they are, I will end it > > here. This cannot be called a copy-case because thats-what I feel are > the > > things that I like. How can you question that? Every guy that loves > maths > > and programming would have written it in the same way and I'm not > faking my > > interest toward them as you can check by following the links that I > have > > given about different contest that I have participated in. Or do you > want > > to say no-one other than you can like both. > > 2. The Timeline was, one feature that I liked in your proposal, so I > > used it. How its copying ? Your exact timeline will not even make > sense for > > me,cause we are applying for different Projects. > > 3. And I did not understood "And you did not code for programming > > competency test, but have the same idea of implement of test" . What > > does this mean ? . Firstly I haven't read your proposal after you > start > > describing "*far enough*" . So ,I did not know what you were doing in > > your test. Even if I knew what you have done or written there, do you > > think, you have claimed that way of solving the problem by putting it > in > > your proposal ? And even after reading your proficiency test idea, the > > only thing that matches with my idea is the Basic-Distance function > which > > is the first result that we get after googling the problem ? So , > have we > > both copied from google ?? > > > > > > I do not think this means reference, he just use my discription directly > and change some similar words.* This means COPY. * > > > > And please before going public with this, you could have at-least talked > > to me personally. I don't think Boost-Developer mailing list is meant for > > such discussions. Mailing list are made for communication that concerns > the > > whole org not any individual. You could have directly mailed to me, > before > > creating this nuisance. > > Genuinely you should be happy that people are following your style and if > > not, at least think a little before calling someone cheat because > borrowing > > ideas are not equivalent to cheating , in anyway. > > > > I apologize to all for spamming their mail-boxes > > > > *I do not accept his apologize. I want to be given impartial judgement for > this disgusting COPY.* > > Thanks all for reading.:) > > Best regards. > > _______________________________________________ > Unsubscribe & other changes: http://lists.boost.org/mailman > /listinfo.cgi/boost > > > -- Northwest University of China Software Engineering jingry0321(a)gmail.com <jingry0321(a)163.com>

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Re: [boost] [gsoc2017]Satyam Pandey Copy GSoC 2017 Proposal writen by Ruoyun Jing
by Ruoyun Jing 03 Apr '17

03 Apr '17

*plagiarism is plagiarism, regardless project, and stop acting like a 3 years old!* 2017-04-03 18:57 GMT+08:00 Satyam Pandey <satyampandey0009(a)gmail.com>: > Hello Ruoyun, > Sorry,I m not good with Chinese names So, I used he. I'm not acting as 3 > year old but I think you are, using your idea in writing proposal by taking > a reference is very popular and is always encouraged. If you believe the > ideas that you get are so unique that no one else can think it by > themselves. You could have send your proposal personally to them. > And you know you have given even the edit accesses on your doc, please > remove it else someone can mess up with your doc. I wrote my proposal by > myself according to me, so it will be better if you can leave it upto > mentors to decide whether I copied or not. > *reference implies quotation or citation of your original work, which in this topic, was neither. as the resemblance between two proposals is simple too obvious to consider anything other than full copy of the origin * > On Apr 3, 2017 4:16 PM, "Ruoyun Jing" <jingry0321(a)gmail.com> wrote: > >> plagiarism is plagiarism, regardless project, and stop acting like a 3 >> years old >> >> 2017-04-03 18:41 GMT+08:00 Ruoyun Jing <jingry0321(a)gmail.com>: >> >>> “She” please. >>> >>> 2017-04-03 18:33 GMT+08:00 Satyam Pandey <satyampandey0009(a)gmail.com>: >>> >>>> Hi all, >>>> >>>> I don't know why Ryoung is so fixated on the matter ? The comment that >>>> I made in his doc was an accident, so I removed it .That's why he got such >>>> mail later. >>>> * Secondly, We are applying for "different projects " . Copying his >>>> exact proposal will not even make sense for me.* >>>> What I used was his style of writing with some other older proposal . I >>>> am adding them as reference here too. >>>> I really feel this is too frustrating why this guy don't even >>>> understand that we are doing 2 different projects, so I can't copy him . >>>> And Sorry to tell you, I used used Moss on our proposal and there is less >>>> than 10% match is our proposal, if you claim that I have just changed a few >>>> words come with some proof as moss is telling something different. >>>> >>>> Please someone look into it. It is very irritating. >>>> >>>> Thanks >>>> Satyam Pandey >>>> >>>> >>>> >>>> On Apr 3, 2017 3:37 PM, "Ruoyun Jing via Boost" <boost(a)lists.boost.org> >>>> wrote: >>>> >>>> Hi Boost, Vissarion, Adam, Niall, David >>>> >>>> Sorry for disturbing you at this time, I experienced a very bad thing >>>> that >>>> Satyam Pandey, a student who sent proposal yesterday copied too many >>>> sections of my proposal. I marked the sections red in the given PDF.* I >>>> think the same pattern of GSoC proposal is common, and it does not >>>> matter, >>>> but his proposal has too many same description as me. * >>>> >>>> And I received two emails from google docs. I will transmit these two >>>> emails in the following emailsThe meaning of one email is Satyam Pandey >>>> do >>>> a replace:replace “Dev Environment Visual Studio for C# development >>>> Eclipse >>>> for JAVA development Code Blocks, Sublime T…” to“`+” >>>> >>>> The meaning of another email is Satyam Pandey reject the comment of >>>> "Proposal" from his own, replace “Dev Environment Visual Studio for C# >>>> development Eclipse for JAVA development Code Blocks, Sublime T…” >>>> to“`+” >>>> >>>> I sent an email to him, but he did not think he did the copy work. But >>>> the >>>> actually thing is* he forked the whole proposal and then change some >>>> words >>>> to fix his condition.* >>>> >>>> 2017-04-03 7:42 GMT+08:00 Satyam Pandey <satyampandey0009(a)gmail.com>: >>>> >>>> > Hello Ruyong, >>>> > I just wanted to explain my part here. I did not copy as per what I >>>> > understand.I have tried answering your queries.I hope you will read it >>>> > calmly and would try to understand. >>>> > >>>> > >>>> > 1. As far as I could guess we share similar background of >>>> competitive >>>> > programming and have no experience in contributing to any large >>>> orgs . So I >>>> > used your proposal as reference for writing my proposal. >>>> > >>>> > >>>> > 1. Our Programming interest are same cause they are, I will end it >>>> > here. This cannot be called a copy-case because thats-what I feel >>>> are the >>>> > things that I like. How can you question that? Every guy that >>>> loves maths >>>> > and programming would have written it in the same way and I'm not >>>> faking my >>>> > interest toward them as you can check by following the links that >>>> I have >>>> > given about different contest that I have participated in. Or do >>>> you want >>>> > to say no-one other than you can like both. >>>> > 2. The Timeline was, one feature that I liked in your proposal, so >>>> I >>>> > used it. How its copying ? Your exact timeline will not even make >>>> sense for >>>> > me,cause we are applying for different Projects. >>>> > 3. And I did not understood "And you did not code for programming >>>> > competency test, but have the same idea of implement of test" . >>>> What >>>> > does this mean ? . Firstly I haven't read your proposal after you >>>> start >>>> > describing "*far enough*" . So ,I did not know what you were doing >>>> in >>>> > your test. Even if I knew what you have done or written there, do >>>> you >>>> > think, you have claimed that way of solving the problem by putting >>>> it in >>>> > your proposal ? And even after reading your proficiency test idea, >>>> the >>>> > only thing that matches with my idea is the Basic-Distance >>>> function which >>>> > is the first result that we get after googling the problem ? So , >>>> have we >>>> > both copied from google ?? >>>> > >>>> > >>>> > I do not think this means reference, he just use my discription >>>> directly >>>> and change some similar words.* This means COPY. * >>>> >>>> >>>> > And please before going public with this, you could have at-least >>>> talked >>>> > to me personally. I don't think Boost-Developer mailing list is meant >>>> for >>>> > such discussions. Mailing list are made for communication that >>>> concerns the >>>> > whole org not any individual. You could have directly mailed to me, >>>> before >>>> > creating this nuisance. >>>> > Genuinely you should be happy that people are following your style >>>> and if >>>> > not, at least think a little before calling someone cheat because >>>> borrowing >>>> > ideas are not equivalent to cheating , in anyway. >>>> > >>>> > I apologize to all for spamming their mail-boxes >>>> > >>>> >>>> *I do not accept his apologize. I want to be given impartial judgement >>>> for >>>> this disgusting COPY.* >>>> >>>> Thanks all for reading.:) >>>> >>>> Best regards. >>>> >>>> _______________________________________________ >>>> Unsubscribe & other changes: http://lists.boost.org/mailman >>>> /listinfo.cgi/boost >>>> >>>> >>>> >>> >>> >>> -- >>> Northwest University of China >>> Software Engineering >>> jingry0321(a)gmail.com <jingry0321(a)163.com> >>> >> >> >> >> -- >> Northwest University of China >> Software Engineering >> jingry0321(a)gmail.com <jingry0321(a)163.com> >> > -- Northwest University of China Software Engineering jingry0321(a)gmail.com <jingry0321(a)163.com>

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Re: [boost] [gsoc2017]Satyam Pandey Copy GSoC 2017 Proposal writen by Ruoyun Jing
by Ruoyun Jing 03 Apr '17

03 Apr '17

Hi Boost, Here are two emails google docs sent to me.Sorry for my language The meaning of one email is Satyam Pandey do a replace:replace “Dev Environment Visual Studio for C# development Eclipse for JAVA development Code Blocks, Sublime T…” to“`+” ---------- Forwarded message ---------- From: Satyam Pandey (Google 文档) <d+MTA0OTYzMTEyNjU1MDQ4ODM2NjY 4-MTE2NjIwMzk2NDMwMjUwNDI3MDcx(a)docs.google.com> Date: 2017-04-02 21:03 GMT+08:00 Subject: Proposal - 替换：将“Dev Environment Visual Studio fo... To: jingry0321(a)gmail.com Satyam Pandey拒绝了“Proposal <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> ”中的建议 [image: Satyam Pandey] Satyam Pandey 替换：将“Dev Environment Visual Studio for C# development Eclipse for JAVA development Code Blocks, Sublime T…”替换为“`+” [image: Satyam Pandey] Satyam Pandey *已拒绝建议* 打开 <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> Google Inc. 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA 您收到此邮件是因为您订阅了有关“Proposal <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> ”的所有讨论。更改 Google 文档向您发送的内容。 <https://docs.google.com/document/docos/notify?id=1wj9xPSmdehh9MzE-3MGHMu7cw…> 您可以通过回复此邮件来参与讨论。 The meaning of another email is Satyam Pandey reject the comment of "Proposal" from his own, replace “Dev Environment Visual Studio for C# development Eclipse for JAVA development Code Blocks, Sublime T…” to“`+” ---------- Forwarded message ---------- From: Satyam Pandey (Google 文档) < d+MTA0OTYzMTEyNjU1MDQ4ODM2NjY4-MTE2NjIwMzk2NDMwMjUwNDI3MDcx(a)docs.google.com> Date: 2017-04-02 21:03 GMT+08:00 Subject: Proposal - 替换：将“Dev Environment Visual Studio fo... To: jingry0321(a)gmail.com Satyam Pandey拒绝了“Proposal <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> ”中的建议 [image: Satyam Pandey] *Satyam Pandey* 替换：将“Dev Environment Visual Studio for C# development Eclipse for JAVA development Code Blocks, Sublime T…”替换为“`+” [image: Satyam Pandey] *Satyam Pandey* *已拒绝建议* 打开 <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> Google Inc. 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA 您收到此邮件是因为您订阅了有关“Proposal <https://docs.google.com/document/d/1wj9xPSmdehh9MzE-3MGHMu7cwMhDPASUEvU9pJb…> ”的所有讨论。更改 Google 文档向您发送的内容。 <https://docs.google.com/document/docos/notify?id=1wj9xPSmdehh9MzE-3MGHMu7cw…> 您可以通过回复此邮件来参与讨论。 -- Northwest University of China Software Engineering jingry0321(a)gmail.com <jingry0321(a)163.com>

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