Use requires-clauses for pair and tuple since C++20
#4819
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StephanTLavavej
approved these changes
Jul 10, 2024
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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Towards #602. Also unconditionally uses
is_swappable<T>::valueworkaround forexpectedas suggested in #4658 (comment).Notes:
conjunction_vare preserved fortuplebecause fold expressions are not yet decomposed for associated constraints until C++26 (and thus doesn't short-circuit, see WG21-P2963R2);tupleconstructors were attempted but are currently given up due to LLVM-59827.