std::ratio and mpl

[Mike-Devel]

Is there any possibility/ what would be necessary to provide the same Boost.Mpl integration for std::ratio as for boost::ratio?

[viboes]

Could you provide a use case?
I wanted to extract the dependency to boost.mpl ans boost.rational, but had nver the time.

Maibe you could consider la possibilité of a subibrary to reduce dependencies.

[Mike-Devel]

@viboes: I don't need it (I've never used mpl directly).
It just was something that came up when I tried to make Boost.Chrono and Boost.Ratio an alias for the respective std:: types/lib. The integration with Boost.Mpl was the one thing where I didn't see a straight way to replicate it for std::ratio, as that is based on boost specific members.