May 2023 - Boost - lists.preview.boost.org

Re: [boost] charconv for C++11
by Alexander Grund 12 May '23

12 May '23

Am 12.05.23 um 02:52 schrieb Gavin Lambert via Boost: > Mere moments ago, quoth I: >>> Hex format will be of the form +1.0e2p+5. The integer part will >>> always be 0 or 1. The exponent will be with a p instead of an e like >>> in base 10 formats. > (Also, FWIW, gcc fails to parse that with the leading +. And I > couldn't even find any online calculators that understand this format.) According to cppreference the floating point parser should not support it: "the plus sign is not recognized outside of the exponent (only the minus sign is permitted at the beginning)" So I'd say that is a bug in Boost charconv given that it wants to be as-if the standard one.

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Re: [boost] Extra file in boost serialization for 1.82.0
by Robert Ramey 12 May '23

12 May '23

On 5/11/23 9:15 PM, Robert Ramey via Boost wrote: > There is a little more to it than this though. Some time ago I modified > my usage of Git so that I have my development updates in the development > branch - so far so good. But then I noticed that all the same > information incremental files were repeated in the master branch. I > found this redundant, repetitive and confusing. So I took to using > "squash and merge" when incorporating the changes on the development > branch. This option is available on GitHub. This seemed to give me what > I wanted: a detailed history of development and a concise changes in the > history of releases. It seems that something is awry here as the "squash > & merge" option doesn't merge file deletions. When I catch up, I'll > look into this. > Note this this procedure has some effects which were unanticipated. a) when someone checks in a change into the master branch without telling me, it is wiped out by the next merger to master. At first I thought this was a bug, now I'm thinking this is more of feature as it takes a long time to track down cases where someone has made changes which leave the master permanently out of sync with the development branch. b) The development and master branches are always the same at the time of release. Again - a feature not a bug. c) Of course it probably does annoy he who checked in a change directly to master, but he shouldn't be doing that anyway. Robert Ramey

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Re: [boost] Extra file in boost serialization for 1.82.0
by Glen Fernandes 12 May '23

12 May '23

On Thu, May 11, 2023 at 9:20 PM Marshall Clow via Boost < boost(a)lists.boost.org> wrote: > > On May 11, 2023, at 12:01 PM, Bryan St. Amour via Boost < > boost(a)lists.boost.org> wrote: > > > > Hi, > > > > I noticed that under boost/serialization, there is a file > "collection_size_type copy.hpp" (notice the space in the file name.) > Comparing it with the contents of collection_size_type.hpp, it looks like > "collection_size_type copy.hpp" is newer. Can someone verify which one is > the correct collection_size_type header file? > > This is https://github.com/boostorg/serialization/issues/237 < > https://github.com/boostorg/serialization/issues/237> > And https://github.com/boostorg/serialization/issues/221 < > https://github.com/boostorg/serialization/issues/221> > > Sadly, this has been a problem for several releases. > > Robert removed it from develop a while ago but it's still in master. Robert, your merges to master aren't removing the file, you need to fix your branches. Glen

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Re: [boost] Extra file in boost serialization for 1.82.0
by Marshall Clow 12 May '23

12 May '23

> On May 11, 2023, at 12:01 PM, Bryan St. Amour via Boost <boost(a)lists.boost.org> wrote: > > Hi, > > I noticed that under boost/serialization, there is a file "collection_size_type copy.hpp" (notice the space in the file name.) Comparing it with the contents of collection_size_type.hpp, it looks like "collection_size_type copy.hpp" is newer. Can someone verify which one is the correct collection_size_type header file? This is https://github.com/boostorg/serialization/issues/237 <https://github.com/boostorg/serialization/issues/237> And https://github.com/boostorg/serialization/issues/221 <https://github.com/boostorg/serialization/issues/221> Sadly, this has been a problem for several releases. — Marshall

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Re: [boost] charconv for C++11
by Gavin Lambert 12 May '23

12 May '23

Mere moments ago, quoth I: >> Hex format will be of the form +1.0e2p+5. The integer part will >> always be 0 or 1. The exponent will be with a p instead of an e like >> in base 10 formats. > This is some strange definition of "hex" with which I was previously > unfamiliar. > > It also contradicts itself, by saying "a p instead of an e" while the > example contains both. (And isn't a very good example, lacking actual > hex digits.) It later occurred to me that the "e" could be intended as a hex digit, thus "1.0e2 with exponent +5". This still makes it a poor example, though. It might perhaps be intended as an example of a vexing parse, but in that case it shouldn't be the *only* example (and perhaps should be elsewhere). (Also, FWIW, gcc fails to parse that with the leading +. And I couldn't even find any online calculators that understand this format.)

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Re: [boost] charconv for C++11
by Gavin Lambert 12 May '23

12 May '23

On 12/05/2023 10:59, Peter Dimov wrote: > The work-in-progress documentation is here: https://develop.charconv.cpp.al/ > Hex format will be of the form +1.0e2p+5. The integer part will > always be 0 or 1. The exponent will be with a p instead of an e like > in base 10 formats. This is some strange definition of "hex" with which I was previously unfamiliar. It also contradicts itself, by saying "a p instead of an e" while the example contains both. (And isn't a very good example, lacking actual hex digits.) I've now found the reference to it -- https://en.cppreference.com/w/cpp/utility/to_chars says that "hex" uses as-if printf %a, and https://en.cppreference.com/w/cpp/io/c/fprintf says printf %a appears *somewhat* like the above (but I still think there is an error in the above). I also still think that whoever came up with that specification needs a whap upside the head, but then I've never encountered a reason to print a floating-point value in hex, so I assume there's some justification for it.

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Re: [boost] charconv for C++11
by Peter Dimov 11 May '23

11 May '23

Robert Ramey wrote: > > In addition to all that, from/to_chars are standard C++17, so Charconv > > can be used by libraries that want to support C++11 (or 14) today, but > > at the same time want to be able to switch to the standard functions > > later when increasing the minimal supported standard to C++17. > > So this is an implementation in C++11 of a library which is already accepted > (and presumably shipping) in C++17 ? And the only user who would use this is > someone who has C++11 but can't upgrade to C++17? > Doesn't seem like very many people to me. Users... and library authors whose libraries still support C++11/14, such as Boost.JSON. > I didn't find an documentation for this. The work-in-progress documentation is here: https://develop.charconv.cpp.al/

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Re: [boost] New Website !
by René Ferdinand Rivera Morell 11 May '23

11 May '23

On Thu, May 11, 2023 at 5:00 PM Andrey Semashev via Boost <boost(a)lists.boost.org> wrote: > > Loading the page takes noticeably longer than the original website. Interesting.. For me, on Firefox 112.0.2 on Manjaro w/Plasma doing a full reload of the home pages is: boost.org.. 1.71s boost.revsys.dev.. 1.57s So the new site is faster for some reason? -- -- René Ferdinand Rivera Morell -- Don't Assume Anything -- No Supone Nada -- Robot Dreams - http://robot-dreams.net

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Re: [boost] New Website !
by Vinnie Falco 11 May '23

11 May '23

On Thu, May 11, 2023 at 3:00 PM Andrey Semashev via Boost <boost(a)lists.boost.org> wrote: > Just opening this page immediately starts hogging CPU on my system Consider opening an issue here https://github.com/cppalliance/temp-site/issues > Please, remove the animation. We are going to remove it as it was an earlier design element that no longer suits the revised style of the site. > Loading the page takes noticeably longer than the original website. I > understand that the new website is probably hosted on a weaker server, > but I also suspect that it is overall more heavy than the original website. Shouldn't take longer to load, this is a statically generated site except for a few dynamic pages (like the Libraries). However, we have also not put any efforts into optimizing page loads (that comes last). > The release notes (https://www.boost.revsys.dev/releases/) seems to have > broken formatting. Library names are not highlighted and release note > items are not displayed as list items. Yes well.. that's not a "real" page, we just slapped it together (see my earlier reply to Ion). > There are quite a bit of information missing. For example, Release > schedule (https://www.boost.org/development/index.html) and most of the > pages under the Development menu seem to be missing. Yes there is, that's why we are doing this open beta, and not meddling with the live website at boost.org. So that we can ensure nothing is missing, everything is accounted for, and all voices are heard. And probably I want to test it for at least one release - we would release both in the live site and in the new site, and see how the release goes in the new site, to ensure we don't miss a release because something is wrong with the new code. > PS: I'm using Firefox 113.0 on Kubuntu 22.04. Please include that information in the issues you open at https://github.com/cppalliance/temp-site/issues Thanks

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Re: [boost] New Website !
by Andrey Semashev 11 May '23

11 May '23

On 5/11/23 17:35, Vinnie Falco via Boost wrote: > Hey, it’s Vinnie here again! I have some very exciting news to share > with you. The renovated website for Boost that we’ve been working on > for far too long is now going into its Public Beta phase! Feel free to > poke around and kick the tires but keep in mind this is a piece of > software and it is still under development. Some parts are missing, > incomplete,or buggy. Without further ado: > > https://boost.revsys.dev Just opening this page immediately starts hogging CPU on my system. I'm assuming, this is because of the animated logo on the right half of the screen. Please, remove the animation. I would also reduce the size of or even remove the logo entirely, as it wastes too much space. Loading the page takes noticeably longer than the original website. I understand that the new website is probably hosted on a weaker server, but I also suspect that it is overall more heavy than the original website. The release notes (https://www.boost.revsys.dev/releases/) seems to have broken formatting. Library names are not highlighted and release note items are not displayed as list items. There are quite a bit of information missing. For example, Release schedule (https://www.boost.org/development/index.html) and most of the pages under the Development menu seem to be missing. PS: I'm using Firefox 113.0 on Kubuntu 22.04.

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