[boost] Re: Interesting Boost Implementation Details?

"Daniel Wallin" <dalwan01@student.umu.se> wrote

MPL uses a template_arity meta-function and specializations on the arity to work around this problem. Something like:

template<class T, int N> struct do_something;

template<template<class> class T, class P0> struct do_something<T<P0>, 1> { };

template<template<class, class> class T, class P0, class P1> struct do_something<T<P0, P1>, 2> { };

do_something<X, template_arity<X>::value>

HTH,

It does, thanks! Arkadiy