Re: [Boost-users] [Statechart] Passing reference to create_processor()

Subject: Re: [Boost-users] [Statechart] Passing reference to create_processor()
From: Juraj Ivančić (juraj.ivancic_at_[hidden])
Date: 2009-04-10 06:15:18

Hawkes Steve-FSH016 wrote:
> It appears that the create_processor implementation instantiates code
> that
> attempts to copy the argument.

It does, and this is why you must pass boost::ref wrapper instead
of the reference itself.

> processor1 =
> 	scheduler.create_processor
> 	<Test, Object&>
> 	(boost::ref(value));

Here you instruct the compiler to convert the parameter into Object &, 
and therefore boost::ref has no effect, as the conversion takes place 
"before" the create_processor call. Just omit the "Object &" template 
parameter and let the compiler deduce it and the code should compile.

HTH
Juraj Ivančić