[Boost-users] [xpressive] Calling a placeholder method from within an action?

Subject: [Boost-users] [xpressive] Calling a placeholder method from within an action?
From: Ami Ganguli (ami.ganguli_at_[hidden])
Date: 2009-10-08 08:53:42

Hi all,

I'm using an object as a placeholder, and would like to call various
methods to the object from within my actions.  Something along the
lines of:

   port = (s1= *digit)
       [ _placeholder->setPort( as<int>(s1) ) ];

I've found a way to do something equivalent using method pointers, but
the resulting code is really opaque.  I'm afraid nobody else will ever
be able to figure out what I've done.

I also know I can do this by creating separate function objects for
each method that will be called.  This is less opaque, but really
verbose.  I end up with hundreds of lines of boilerplate code.

Is there a "right" way to achieve something similar?

Regards,
Ami.