Re: [boost] [static_if] Is there interest in a `static if` emulation library?

2 Sep 2014

      On 2014-09-02 14:08, Sebastian Redl wrote:
...
On 02 Sep 2014, at 8:58, Roland Bock  wrote:
...
On 2014-09-02 03:27, Lorenzo Caminiti wrote:
You could use inheritance. If the condition is true, you inherit from a
struct that provides the data member, otherwise you inherit from a
struct that does not. Ugly, I know, but it works if inheritance is an
option for you.
That’s what I’m doing, but as you say, it is ugly:
template <typename Policy>
  using proxy_base_t = std::conditional_t<
      has(Policy::requirements, features::raw_access),
      proxy_raw_access,
      proxy_nodot<Policy>>;
template <typename Policy>
class proxy : public proxy_detail::proxy_base_t<Policy> {
…
};
Sebastian
Yep, same here :-)

FYI: I might host an open session to discuss mixins at CppCon on Monday
(not formally confirmed yet). At least the way I envision them, they
would allow adding members without inheritance.

Roland