Re: [Boost-users] Why is cref required in this nested bind example?

Subject: Re: [Boost-users] Why is cref required in this nested bind example?
From: Chris Stankevitz (chrisstankevitz_at_[hidden])
Date: 2012-12-04 20:08:17

On Tue, Dec 4, 2012 at 4:20 PM, Steve Lorimer <steve.lorimer_at_[hidden]> wrote:
> Try call the result:

Steve,

Thank you.  That was pretty boneheaded of me to leave out.  Another
way to get the compiler failure is to just store the result:

//function<void()> x = bind(b, bind(a));
  function<void()> x = bind(b, cref(bind(a)));

I will paste the corrected demo below.

Thank you,

Chris

===

#include <boost/bind.hpp>
#include <boost/function.hpp>

using boost::bind;
using boost::cref;
using boost::function;

void a()
{
}

void b(function<void()>)
{
}

void f()
{
//function<void()> x = bind(b, bind(a));
  function<void()> x = bind(b, cref(bind(a)));
}

===

$ g++ --version
g++ (Gentoo 4.5.4 p1.0, pie-0.4.7) 4.5.4