Subject: Re: [Boost-users] MPL - what rule am I breaking?
From: Eric Niebler (eric_at_[hidden])
Date: 2009-03-06 14:06:16
Noah Roberts wrote:
> template < typename FIELD, bool Writable >
> struct rec
<snip>
> template < typename VEC >
> struct generate_record
> : boost::mpl::inherit_linearly< VEC, boost::mpl::inherit< rec<pl::_2,
> true>, pl::_1> >::type
<snip>
The problem is the "bool Writable" non-type template parameter. The MPL
lambda expression evaluator can't handle that. Change it to this:
template<typename Field, typename Writable>
struct rec
and then
template < typename VEC >
struct generate_record
: boost::mpl::inherit_linearly< VEC, boost::mpl::inherit<
rec<pl::_2, mpl::true_>, pl::_1> >::type
HTH,
-- Eric Niebler BoostPro Computing http://www.boostpro.com