Implement LWG-3617: function/packaged_task deduction guides and deducing this
#2966
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Perhaps I was confused by the "explicit" in "explicit object parameter".
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Note that |
strega-nil-ms
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Jul 29, 2022
Co-authored-by: nicole mazzuca <[email protected]>
strega-nil-ms
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Jul 29, 2022
StephanTLavavej
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Aug 4, 2022
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Thanks, this looks great! I never imagined that the deduction guide machinery would be extended in this way, but it works quite elegantly 😻 I've pushed a couple of small extensions to the tests (FYI @strega-nil-ms after you approved). |
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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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Thanks for updating the library to keep up with the compiler's Future Technology! 🤖 🚀 😸 |
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Aug 6, 2022
…educing `this` (microsoft#2966) Co-authored-by: nicole mazzuca <[email protected]> Co-authored-by: Stephan T. Lavavej <[email protected]>
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…educing `this` (microsoft#2966) Co-authored-by: nicole mazzuca <[email protected]> Co-authored-by: Stephan T. Lavavej <[email protected]>
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Fixes #2952.
I think we should detect the predefined core language feature-test macro
__cpp_explicit_this_parameter, but MSVC didn't define it in VS2022 17.2 and 17.3, so I filed DevCom-10107077.I can imagine the future where there will be "C++17/20 with explicit object parameters" dialects, so I guess we should not restrict these library changes to C++23, and just use
_HAS_CXX17 && defined(__cpp_explicit_this_parameter)to enable these changes.