AMDG Sebastian Redl <sebastian.redl <at> getdesigned.at> writes:
Ion Gaztañaga wrote:
I mean:
template<class T, member_hook T::* P> class value_traits;
compiles fine, but I just want to have one template parameter
template<member_hook T::* P> class value_traits;
This is a compilation error. Can C++ deduce both the parent class and the pointer to member? I don't see any reason that should forbid this, but I can find the right syntax.
There is none. There's no such thing as implicit template parameters. Each parameter must be explicitly specified.
It's possible but ugly using macros. template<class MemberPointer, MemberPointer P> class value_traits; #define BOOST_INTRUSIVE_VALUE_TRAITS(member_pointer) \ value_traits<BOOST_TYPEOF(member_pointer),member_pointer> member_hook_t::BOOST_INTRUSIVE_VALUE_TRAITS(&T::hook) In Christ, Steven Watanabe