Re: [Boost-users] [signals2, bind] connecting a slot with unrelated signature

Subject: Re: [Boost-users] [signals2, bind] connecting a slot with unrelated signature
From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2009-08-06 15:16:43

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On Thursday 06 August 2009, Igor R wrote:
> It turns out that the simple nested binds with protect() solve this.

Why do you need nested binds?  Doesn't this work?:

#include <boost/signals2/signal.hpp>
#include <iostream>

using namespace boost;

void callback(int cookie)
{
  std::cout << cookie << std::endl;
}

int main()
{
  signals2::signal<void(int, double, int)> sig;
  // I'd like to bind cookie=5 and to connect such a binder to the signal.
  sig.connect(bind(&callback, 5));
  sig(1, 2.2, 3);
  return 0;
}

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