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(Boost) Reflecto
by Emil Dotchevski 13 Apr '26

13 Apr '26

I wrote a small constexpr type/enum reflection library which I think may be a good addition to Boost. It needs C++17, although it relies on implementation-specific support (works on gcc, clang and msvc). https://github.com/zajo/reflecto

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[Release] Reminder - the master branch closes for the release this WEDNESDAY
by Marshall Clow 11 Apr '26

11 Apr '26

Current status: Release open for bug fixes and documentation updates. Other changes by permission of a release manager. Calendar here: https://www.boost.org/calendar/ — Marshall

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Proposing statsort for Boost.Sort
by Peter Taraba 09 Apr '26

09 Apr '26

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std::core_dump() Issue 2 — Now Focused on the Boost Community
by Mark Cooper 08 Apr '26

08 Apr '26

Hi all, Issue 2 of the std::core_dump() newsletter is out: https://dl.cpp.al/newsletters/boost-newsletter-2026-03.pdf We've expanded the newsletter's focus from C++ Alliance news to the Boost community as a whole. Highlights: - Boost.URL constexpr URL parsing — malformed literals now fail at compile time, not runtime - Boost Docs Localization Pipeline — translation workflow piloted on Boost.JSON and Boost.Unordered If you'd like to contribute to next month's issue, reach out! Mark

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[msm] Antora documentation should reverted
by Vinícius dos Santos Oliveira 08 Apr '26

08 Apr '26

It's fully broken. Compare this: https://www.boost.org/doc/libs/1_90_0/doc/antora/msm/reference/euml-operato… To this: https://www.boost.org/doc/libs/1_89_0/libs/msm/doc/HTML/ch10.html It's clear that nobody took the time to review the output of whatever tool was used to auto-convert the old thing to Antora. This isn't the only place where the Antora version is broken.

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[math] Remez algorithm in Boost Bessel implementation
by znailcode＠gmail.com 02 Apr '26

02 Apr '26

Hi, I am currently working on the Struve function implementation alongside the Bessel functions. To approximate H₀(x) and H₁(x), I plan to use the Remez minimax approximation algorithm, similar to what is used in the current Bessel implementation: https://github.com/boostorg/math/blob/develop/include/boost/math/special_fu… (for example, in the region x ≤ 8). I see that an implementation of the Remez algorithm already exists in Boost here: https://github.com/boostorg/math/blob/develop/include_private/boost/math/to… I would like to ask which implementation of the Remez algorithm was used to derive the Bessel function approximations. Was it this Boost implementation, or a different one? Additionally, how were the reference values computed for the approximation process? Currently, I am using mpmath in Python to generate reference values for the Struve function with the required precision. Best regards, Zaripov Nail

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One-time change to the release schedule (two week delay)
by Marshall Clow 26 Mar '26

26 Mar '26

Due to schedule conflicts with the release manager, we are going to postpone the 1.91.0 release for two weeks. I will be updating the calendar later today, but the important dates are: 15-Apr: Master branch closes for the 1.91.0 release 22-Apr: Scheduled release date Note that we’re currently in the post-beta period, so the following caveats still apply: Release open for bug fixes and documentation updates. Other changes by permission of a release manager. Requests to merge changes may be delayed during the week of April 6-10th. I apologize for the inconvenience. — Marshall (for the release managers)

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[Regex] \r matching \n
by Olaf van der Spek 25 Mar '26

25 Mar '26

Hi, In this regex the \n matches \r. How is this defined / controlled? Is there a way to only match \n? std::string s = "[*] A\rB\n"; s = boost::regex_replace(s, boost::regex(R"(\[\*\](.+?)(\n|$))"), "<li>\\1</li>"); std::println("{}", js_encode(s)); // <li> A</li>\rB\n Regards, -- Olaf

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A proposal to delay the Boost release for two weeks
by Marshall Clow 24 Mar '26

24 Mar '26

We have a small problem. Almost all of the release managers will be AFK for the week after Easter, which is the week when we’re scheduled to release 1.91.0 The current schedule is: 1-Apr: Master branch closed 2-Apr: RC1 created 8-Apr 1.91.0 released (assuming no problems) I propose to move all of those dates back two weeks. 15-Apr: Master branch closed 16-Apr: RC1 created 22-Apr 1.91.0 released (assuming no problems) Comments? — Marshall

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Re: Multi Review Result
by Alfredo Correa 19 Mar '26

19 Mar '26

> Date: Mon, 16 Mar 2026 17:51:42 +0000 > From: Matt Borland <matt(a)mattborland.com> > Subject: [boost] Multi Review Result > To: "boost(a)lists.boost.org List" <boost(a)lists.boost.org> > Message-ID: <4otKiL_qCApAgTgtXPKXThbIFKkLIMk63P8vVM0NE-IthZzhBzta1GqWe > wIMTuvg8hFOGRr5ZFCP8X1xrlGJtF0KwrRIZYP-AGw2CLJlKp8=@ > mattborland.com> > Content-Type: multipart/signed; protocol="application/pgp-signature"; > micalg=pgp-sha512; > boundary="------c6d2e97bdd1cf2c5b6caf1a740c0085a140 > 8fcbcdd2b5dfcc2147cf72c1a1483"; charset=utf-8 > > Bottom Line Up Front: The library is conditionally accepted. > Thank you again to everyone who participated in the review. > Thank you all for your important reviews; they are very valuable to me. I know many people spend many hours on this. Special thanks to Matt for managing this review, with whom I will coordinate the next steps. In the coming weeks, I am going to work intensively on revamping the Reference section of the documentation, making other tweaks, and preparing a presentation. Thank you, Alfredo

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