Hi,
not a review yet.
I´m just wondering: would the implementation below perfom better than the
recursive version of mp_find_impl ?
I think it should perform better when one uses mp_find several times in the
same list.
It also compiles in vs2013.
template struct mp_find_impl_helper;
template <> struct mp_find_impl_helper<>
{
struct tag {};
static mp_size_t<0> get(const tag&, ...);
};
template
struct mp_find_impl_helper : mp_find_impl_helper
{
using mp_find_impl_helper::get;
using parent_tag = typename mp_find_impl_helper::tag;
struct tag : parent_tag {};
static mp_size_t<1 + sizeof...(Rest)> get(const tag&, mp_identity<T>);
};
template struct mp_find_impl;
template class L, class ... T, class V>
struct mp_find_impl, V>
{
using helper = mp_find_impl_helper;
using tag = typename helper::tag;
using R = decltype(helper::get(tag(), mp_identity<V>()));
using type = mp_size_t;
};
// Regargs
// robhz
