Re: [Boost-users] mpl::set and mpl::fold

AMDG Paul Graphov wrote:

I've encountered a problem while using mpl::fold with mpl::set

I've defined a template to check if one sequence contains all elements of the other:

namespace mpl = boost::mpl; template struct subset : mpl::fold< A, mpl::true_, mpl::and_ > > {};

It works fine with lists and vectors but when first template parameter (A) is set or set_c it fails to compile. Did I miss something? Why is it impossible to iterate through a set via fold?

It looks like fold is trying to increment past the end of the sequence. It works for me with the trunk with set, but not with set_c. I think the problem is that end<> is broken for set_c. In Christ, Steven Watanabe