Re: [boost] [Signal] Variadic template implementation of signal/slot

Subject: Re: [boost] [Signal] Variadic template implementation of signal/slot
From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2009-05-22 15:58:46

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On Friday 22 May 2009, Frank Mori Hess wrote:
> I guess you'll have to wrap all the non-signature template parameters for
> the signal in a policy class that can be passed as the first template
> parameter to variadic_signal, since the variadic template parameter pack
> has to be last.

Actually, after playing around with variadic templates a bit more and looking 
at the spec of the variadic std::function in c++0x, it looks like you can use 
partial template specialization and function types to match how the current 
signal class looks.  Something like:

template<typename Signature, typename DefaultedType=int> class myclass;

template<typename DefaultedType, typename R, ... Args>
class myclass<R(Args...), DefaultedType>
{
  //...
}

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