Re: [boost] [intrusive] Comments on interface changes and stateful value_traits (long)

From: Steven Watanabe (steven_at_[hidden])
Date: 2007-08-25 23:18:39

AMDG

Steven Watanabe <steven <at> providere-consulting.com> writes:

> Giovanni Piero Deretta <gpderetta <at> gmail.com> writes:
> 
> > Does this actually work? Shouldn't enable/disable_if depend on some
> > template arguments of f (and f is not templated here)?
> 
> Right.  Never mind.  We'll have to wait for concepts.
> 

Ok.  Here's a method that actually works

template<bool is_static, class Derived>
struct base;

template<class Derived>
struct base<true, Derived> {
    static R f();
};

template<class Derived>
struct base<false, Derived> {
    R f();
};

template<class T>
class C : base<f_is_static<T>::value, C<T> > {};

In Christ,
Steven Watanabe