Re: [boost] Weak functor: Interested? (How to boost::bind to a weak_ptr)

Subject: Re: [boost] Weak functor: Interested? (How to boost::bind to a weak_ptr)
From: Vladimír Tøebický (vladimir.trebicky_at_[hidden])
Date: 2012-01-10 16:49:25

On Tue, Jan 10, 2012 at 10:34 PM, Roman Perepelitsa
<roman.perepelitsa_at_[hidden]> wrote:
> 2012/1/10 Vladimír Třebický <vladimir.trebicky_at_[hidden]>
>
>>
>> boost::function<void(int)> f = boost::bind(boost::weak_fn(&Foo::bar,
>> some_weak_ptr), _1);
>> f(1);
>>
>
> It's it better to bind &Foo::bar directly?
>
> Â boost::function<void(int)> f = boost::bind(&Foo::bar, some_weak_ptr, _1);
>
> Much simpler in my opinion.

That cannot be done, boost::bind() indeed accepts references, pointers
and shared_ptrs for member functions but doesn't accept weak pointers,
because a weak pointer cannot be trivially converted to shared_ptr (or
anything that leads to the corresponding class instance).

> Roman Perepelitsa.

V.