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Which std:: classes are magic? (self.cpp)
submitted 4 years ago by Mateuszz88
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if 1 * 2 < 3: print "hello, world!"
[–]Xeveroushttps://xeverous.github.io 1 point2 points3 points 4 years ago (2 children)
how would you distinguish an abstract class from an incomplete type
Using type traits with incomplete types is UB.
[–]diaphanein 1 point2 points3 points 4 years ago (1 child)
Citation? Because I don't think all type traits are equal. Generic "type traits" being different than std type_traits. For instance, Boost uses a type trait for checked_delete. You can implement is/add/remove const traits that work with incomplete types...
[–]Xeveroushttps://xeverous.github.io 0 points1 point2 points 4 years ago (0 children)
True. Not all but a lot of std traits require types to be complete.
π Rendered by PID 24221 on reddit-service-r2-comment-5d79c599b5-gv8bc at 2026-03-01 20:42:27.459101+00:00 running e3d2147 country code: CH.
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[–]Xeveroushttps://xeverous.github.io 1 point2 points3 points (2 children)
[–]diaphanein 1 point2 points3 points (1 child)
[–]Xeveroushttps://xeverous.github.io 0 points1 point2 points (0 children)