Re: [Boost-users] "weak" binding to member?

Subject: Re: [Boost-users] "weak" binding to member?
From: Igor R (boost.lists_at_[hidden])
Date: 2011-09-12 13:41:38

> I don't know what you mean by that.

I mean that you can pass a weak_ptr along with the binder:

void setYourFunctor(const function<void(void)> &func, const
weak_ptr<void> &track)
{
  // store "func" and "track"
  func_ = func;
  track_ = track;
}

// Now in the place where "func_" should be called:
void call()
{
  shared_ptr<void> p = track_.lock();
  if (p)
    func_();
}

// Now use it this way:
shared_ptr<YourClass> ptr = ...;
setYourFunctor(bind(&YourClass::doSomething, ptr.get()), ptr);