bitmask<> doesn't compile in C++17...

[degski]

... because std::unary_function was removed in C++17.

1>In file included from y:\vcpkg\installed\x64-windows-static\include\experimental/bit_mask.hpp:10:
1>y:\vcpkg\installed\x64-windows-static\include\experimental/fundamental/v3/bits/bit_mask.hpp(627): error : unknown template name 'unary_function'

[viboes]

Thanks for the report.

Would you mind to provide a patch?

[degski]

Would you mind to provide a patch?

Sorry, but there's just too much that causes trouble. The Boost-like internal-inter-dependency-hell is not helping either.