Potential major new features of C++26 include pattern matching, reflection and contracts. Interestingly, Reflection and Contracts were not discussed by the corresponding domain-specific sub-working groups (SG7 and SG21) for the first time during this meeting, but directly by the language and library extension groups (EWG and LEWG). <\/p>\n\n\n\n
Feedback and discussions on new features<\/strong><\/h2>\n\n\n\nThe review of Reflection was overwhelmingly positive. Pattern matching also received largely positive feedback. However, the discussion was interrupted by a magnitude 5.2 earthquake. The review of Contracts was more mixed, which is hardly surprising as the feature addresses the tension between safety and performance. Since this meeting, it has been debated whether Contracts may have to be postponed to C++29. <\/p>\n\n\n\n
Michael was in Tokyo with two papers:<\/p>\n\n\n\n
\n- P2721R0: Deprecating function <\/a>proposed to mark the class std::function as deprecated, as the class std::copyable_function (also introduced by Michael and already accepted) should be preferred in the future. The feedback for this expected(!) controversial topic was twofold: On the one hand, there was consensus that this should be done in the future, but there was no consensus to do this already in C++26. Michael will bring up the topic again in a few years when C++29 is being worked on and more user feedback on the necessary porting is available. <\/li>\n\n\n\n
- P3044R0: sub-string_view from string<\/a> suggests an easier way to reference a part of a string without creating a copy. The paper was postponed to an online meeting in April prior to the meeting, but initial informal feedback was very positive. The question contained in the paper about interest in a follow-up paper that introduces something similar for continuous containers cannot yet be assessed.
<\/li>\n<\/ul>\n\n\n\nThe next meeting, in which Michael will only participate remotely, will take place in June in St. Louis (MO), USA.
This will be followed by the “C++ Europe Tour”: <\/p>\n\n\n\n
Michael was in Tokyo with two papers:<\/p>\n\n\n\n
<\/li>\n<\/ul>\n\n\n\n
The next meeting, in which Michael will only participate remotely, will take place in June in St. Louis (MO), USA.
This will be followed by the “C++ Europe Tour”: <\/p>\n\n\n\n
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