Update __cpp_lib_concepts (see WG21-P1902). #287
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Description
Update
__cpp_lib_concepts
(see WG21-P1902).This feature-test macro is being extensively queried, so we're updating it with high priority ahead of the other feature-test macro changes in this paper.
Checklist
Be sure you've read README.md and understand the scope of this repo.
If you're unsure about a box, leave it unchecked. A maintainer will help you.
_Ugly
as perhttps://eel.is/c++draft/lex.name#3.1 or there are no product code changes.
verified by an STL maintainer before automated testing is enabled on GitHub,
leave this unchecked for initial submission).
members, adding virtual functions, changing whether a type is an aggregate
or trivially copyable, etc.).
the C++ Working Draft as a reference (and any other cited standards).
If they were derived from a project that's already listed in NOTICE.txt,
that's fine, but please mention it. If they were derived from any other
project (including Boost and libc++, which are not yet listed in
NOTICE.txt), you must mention it here, so we can determine whether the
license is compatible and what else needs to be done.