Re: [Boost-users] Delegating to boost::function with arbitrary signature

Subject: Re: [Boost-users] Delegating to boost::function with arbitrary signature
From: Bjorn Reese (breese_at_[hidden])
Date: 2013-12-14 10:25:45

On 12/14/2013 03:49 PM, Alexander Lamaison wrote:

> I'm trying to create something like a `boost::function`, but with an
> extra 'smart handle' tucked inside, which controls the lifetime of a
> resource the functions needs to execute correctly.

The two aspects (resource life-time and generic signatures) should
probably be handled separately.

Regarding resource life-time, a common pattern is to bind to a member
function on an object obtained via shared_from_this(). Here is an
example from Boost.Asio:

   http://www.boost.org/doc/html/boost_asio/tutorial/tutdaytime3.html

Regarding generic signatures I am less certain, but maybe you could look
into Boost.TypeErasure. Especially its type-safe printf example (or the
subsequent example with multiple signatures)

 
http://www.boost.org/doc/html/boost_typeerasure/examples.html#boost_typeerasure.examples.printf