Alex Guteniev 201971e293 Make MSVC use [[nodiscard]] (#2615) ...

* Make MSVC use [[nodiscard]]
* Uniformly detect attributes for __cplusplus and _MSVC_LANG

2021-11-26 07:32:50 -08:00

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Make MSVC use [[nodiscard]] (#2615)

2021-11-26 07:32:50 -08:00