I'm trying to use the MPL for the first time, and I have two questions.
First, I want to use BOOST_MPL_ASSERT to say that at least one of two
conditions is true. For the time being, one of the conditions is always
false, so this is what I've tried:
BOOST_MPL_ASSERT((
false
||
boost::is_same
));
It won't compile, so I tried this:
BOOST_MPL_ASSERT((
mpl::or_(false,
boost::is_same)
));
It won't compile either. I'm guessing that I have to use mpl::false_ or
something in place of false, but that doesn't work either. Can somebody
please tell me the proper way to say what I want to say?
My second question is about the existence of an MPL algorithm akin to
the STL algorithm includes. Given two MPL vectors V1 and V2, I want to
know if all the types in V1 are also in V2. I know about mpl::contains,
but I can't find mpl::includes. Is there one, or do I need to write it
myself?
I have the MPL book, so references to that are fine, in addition to
anything online.
Thanks,
Scott
