Re: [boost] [mpl] bug: mpl::is_sequence< mpl::int_<1> > fails to compile

David Abrahams wrote:

Tobias Schwinger <tschwinger@neoscientists.org> writes:

...

For those about to reply "don't use is_sequence" please answer this question first:

How to traverse a tree where the nodes are sequences and the leafes are mpl::intS without it?

Just reformulate the tree so that nodes are all wrapped in something you can recognize reliably:

tree< list< tree<vector<int, long> > , tree<vector<long,int> > > >

Pretty nice for hard-wired input -- impractical in my case, though. Why not make is_sequence work reliably? I understand the "concept detection hurts genericity" objection, but we shouldn't be too dogmatic about it -- that rule is not generic itself, after all. Regards, Tobias