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Section: 13.11.1 [networking.ts::async.uses.executor.trait] Status: C++20 Submitter: Jonathan Wakely Opened: 2017-08-17 Last modified: 2021-02-25
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[async.uses.executor.trait] p1 says "if a type T::executor_type exists" but we don't want it to be required to detect private or ambiguous types.
[ 2017-11-01 Moved to Tentatively Ready after 7 positive votes for P0 on c++std-lib. ]
[2018-3-17 Adopted in Jacksonville]
This resolution is relative to N4656.
Edit 13.11.1 [networking.ts::async.uses.executor.trait] as indicated:
-1- Remark: Detects whether T has a nested executor_type that is convertible from Executor. Meets the BinaryTypeTrait requirements (C++Std [meta.rqmts]). The implementation provides a definition that is derived from true_type if
a typeT::executor_type existsand is_convertible<Executor, T::executor_type>::value != false, otherwise it is derived from false_type. A program may specialize this template […].