November 2013 - Boost - lists.boost.org

[endian] status?
by Michael Marcin 04 Nov '13

04 Nov '13

I need to read/write some structs as binary data over an asio tcp socket and convert host<->network byte order. IIRC the endian library was supposed to clean this process up substantially but I can't find it. I thought it passed review years ago but I could be misremembering.

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Re: [boost] [modularization] Dependency to Boost.Exceptionunavoidable?
by Emil Dotchevski 03 Nov '13

03 Nov '13

On Sat, Nov 2, 2013 at 5:19 PM, Niall Douglas <s_sourceforge(a)nedprod.com> wrote: > On 1 Nov 2013 at 16:01, Emil Dotchevski wrote: > >> 1. If BOOST_NO_EXCEPTIONS is defined, libraries should not throw. One >> option to implement that behavior is to pass exception objects (of the >> usual documented library-defined types) to boost::throw_exception. > > I wonder how useful supporting exceptions disabled is in recent years? I agree that many Boost libraries are impractical with exception handling disabled, but there is no harm done in supporting BOOST_NO_EXCEPTIONS via boost::throw_exception, since its specification does not allow it to return. -- Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode

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[1.55] Request for permission to merge
by Vicente J. Botet Escriba 03 Nov '13

03 Nov '13

Hi, I would like to merge if it is possible this fix https://svn.boost.org/trac/boost/changeset/86540 for this bug https://svn.boost.org/trac/boost/ticket/9319. Please let me know. Vicente

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Re: [boost] [modularization] Improving/splitting up detail
by Cox, Michael 03 Nov '13

03 Nov '13

On Sat, Nov 2, 2013 at 6:20 AM, <boost-request(a)lists.boost.org> wrote: > Date: Sat, 2 Nov 2013 08:20:02 -0400 > From: Rob Stewart <robertstewart(a)comcast.net> > To: "boost(a)lists.boost.org" <boost(a)lists.boost.org> > Subject: Re: [boost] [modularization] Improving/splitting up detail > Message-ID: <57B4CEB2-A04B-4341-A613-39FB1A9D6AE3(a)comcast.net> > Content-Type: text/plain; charset=us-ascii > > On Nov 2, 2013, at 4:35 AM, "John Maddock" <john(a)johnmaddock.co.uk> wrote: > >>>> The goal is to create two 'modules' or libraries: >>> >>> We had that originally. They were called "detail" and "core". > [snip] >>> >>> I prefer to have no such "detail" libraries at all. Everything that is useful to a broader audience should be in utility. >> >> Funnily enough I was about to suggest just that: lets do away with detail and have: >> >> core: >> everything in: >> boost/detail/ >> boost/pending/ >> boost/utility/ >> That has no dependencies. What about config, or should that also go in core? >> >> Utility: >> As above, but with dependencies (mostly to mpl/pp/type_traits). >> >> throw_exception.hpp and dependencies should go in core too, as would a few headers under boost/ such as cstdint.hpp etc. > > That seems like a good idea provided that everything now in namespace detail remains in that namespace. > > > ___ > Rob > > (Sent from my portable computation engine) >

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Re: [boost] [modularization] Dependency to Boost.Exceptionunavoidable?
by Niall Douglas 03 Nov '13

03 Nov '13

On 1 Nov 2013 at 16:01, Emil Dotchevski wrote: > 1. If BOOST_NO_EXCEPTIONS is defined, libraries should not throw. One > option to implement that behavior is to pass exception objects (of the > usual documented library-defined types) to boost::throw_exception. I wonder how useful supporting exceptions disabled is in recent years? Most recent C++ code assumes throwing exceptions works, and even games consoles which traditionally were very anti exceptions are beginning to weaken on this [1]. I also note that the C++ 11 standard library does a lot more exception throwing than the C++ 03 standard library, so it would surely be harder use C++ 11 with exceptions disabled. All this said, LLVM used to not use exceptions nor RTTI, and could be compiled with both disabled. No idea if this is still the case. Either way it was/is an interesting choice by a large, modern, non-embedded C++ use case. [1]: http://www.gamedev.net/topic/639123-portable-use-and-disabling-of-exceptions Niall

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Concatenating int value to string ..??
by Rahul Mathur 02 Nov '13

02 Nov '13

All, I wish to have string (combination of string value and int value) which increments until 100. The code is as below - --- #include <iostream> #include <cstdlib> #include <string> #include <boost/lexical_cast.hpp> using namespace std; int main() { std::string TID = "Apple"; int TagID = 01, Value = 000 /* 100 IDs*/; std::string TagName, TagInitial, TagUId; TagName = TID + boost::lexical_cast<std::string>(TagID); // Should be as -> Apple01 TagInitial = TagName + boost::lexical_cast<std::string>(Value); // Should be as -> Apple01000 int i = boost::lexical_cast<int>(TagInitial) + 1; // Should be as -> Apple01001 TagUId = boost::lexical_cast<std::string>(i); std::cout << "Tag ID .." << TagUId << endl; } I get below error message - -- terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::bad_lexical_cast> >' what(): bad lexical cast: source type value could not be interpreted as target Aborted (core dumped) -- Any clue? ~ Thanks!!

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[Trac] Catch-22: Captcha Errors on legitimate submissions
by Jim Bell 02 Nov '13

02 Nov '13

I had a ticket attachment and comment both rejected from a "captcha error," so I decided to open a Trac ticket on the captcha mechanism itself. But guess what? THAT ticket was also rejected by the captcha error. Catch-22! So I'm posting it here. I get: -------------------------------- Captcha Error Submission rejected as potential spam (StopForumSpam says this is spam (username)) Trac thinks your submission might be Spam. To prove otherwise please provide a response to the following. -------------------------------- But there's nothing following to which to provide a response. Is it mis-configured?

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[modularization] Dependency to Boost.Exception unavoidable?
by Daniel Pfeifer 02 Nov '13

02 Nov '13

2013/11/1 Peter Dimov <lists(a)pdimov.com>: > > ->exception is unavoidable because of throw_exception. I think `throw_exception.hpp` belongs to Boost.Utility for two reasons: 1. That file is older than Boost.Exception. 2. It introduces a *conditional* dependency to Boost.Exception. When I provide an implementation for `throw_exception` and/or define BOOST_NO_EXCEPTIONS/BOOST_EXCEPTION_DISABLE accordingly, I would expect *not* having a dependency to Boost.Exception. -- Daniel

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[git] open an "admin" link doesn't works
by Vicente J. Botet Escriba 01 Nov '13

01 Nov '13

Hi, I tried to gain write access to a particular Boost library but the link *open an "admin"* issue <https://github.com/boostorg/admin/issues> in https://svn.boost.org/trac/boost/wiki/ModAdmin . doesn't works for me. Could someone help me? Vicente

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Re: [boost] [Boost-users] [1.55.0] Release candidates available
by Tom Kent 01 Nov '13

01 Nov '13

On Fri, Nov 1, 2013 at 2:12 AM, Craig Henderson <hello(a)craighenderson.co.uk>wrote: > > > On 1 Nov 2013, at 00:29, Lars Viklund <zao(a)acc.umu.se> wrote: > > > >> On Thu, Oct 31, 2013 at 10:38:22PM +0000, Craig Henderson wrote: > >> Compiling x64 with vc12 (MSVS2012) using the command below, I get 33 > failed > >> targets. I reran the build to get a reduced log, which is attached. > >> > >> b2 --build-dir=bin.x64 stage --build-type=complete variant=release,debug > >> address-model=64 link=shared,static runtime-link=shared,static > >> threading=multi > >> > >> All the errors seems to be with transform_width.hpp: > >> .\boost/archive/iterators/transform_width.hpp(151) : error C2039: 'min' > : > >> is not a member of 'std' > > > > This took months to fix on trunk, where it's fixed, but the author has > > yet to bother/get-around merging it to release. > > > > The trunk has other build problems, but this one seems fixed, yes. > MSVS2013 is an important compiler to support. > So, is there going to be an _rc2 for this and the bcp problem? Tom

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