Eric Niebler writes:
Aleksey Gurtovoy wrote:
Eric Niebler writes:
Oh. How do I make my code work with old versions of MPL and new? There is no mpl/version.hpp or a macro I can test for conditional compilation AFAICT. I'll have to avoid both mpl::apply_if and mpl::eval_if and roll my own. :-(
As Joaquín already replied, you can test BOOST_VERSION.
Thanks, Aleksey. Would there be any benefit to having a MPL-specific version macro? The iterator adaptors library has BOOST_ITERATOR_ADAPTORS_VERSION, for instance.
I'm not sure why. Unless the library has its own release cycle (like Spirit), I don't see any benefit in having a library-specific macro.
Is there a doc to help people migrating from the old to the new MPL? A list of differences?
Like I mentioned in my original announcement, yes, it was forthcoming. Posted now.
Very helpful, thank you. I hope this doc is part of the 1.32 release.
Definitely.
Also, the references to apply_if in the mpl documentation need to be changed to eval_if.
The docs are still pending a major upgrade which will reflect all the changes. -- Aleksey Gurtovoy MetaCommunications Engineering