Re: [Boost-users] [signals2] analysing the signature

Subject: Re: [Boost-users] [signals2] analysing the signature
From: Igor R (boost.lists_at_[hidden])
Date: 2010-02-08 08:41:22

> signal_type::arg<0>::type

Thanks.

Originally I tried the following:

#include <boost/signals2.hpp>
#include <boost/typeof/typeof.hpp>

int main()
{

  boost::signals2::signal<void (int)> onEvent;
  typedef BOOST_TYPEOF(onEvent) OnEvent;
  typedef OnEvent::first_argument_type first;
}

And it doesn't compile (MSVC9.0)

Note that if I add 1 argument, it does compile:
//...
boost::signals2::signal<void (int, int)> onEvent;
typedef OnEvent::first_argument_type first;