Add downlevel implementation of std::optional for C++11

Copied from https://github.com/TartanLlama/optional at commit
3a1209de8370bf5fe16362934956144b49591565.

Trimmed trailing space characters.
This commit is contained in:
Luca Bacci 2025-01-29 19:44:37 +01:00
parent 3bfe1eed02
commit a8d8c53107

2062
src/win32/optional.hpp Normal file

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