Re: [Boost-users] [lambda][optional] Accessing an optional variable through lambda

Subject: Re: [Boost-users] [lambda][optional] Accessing an optional variable through lambda
From: Ryan McConnehey (mccorywork_at_[hidden])
Date: 2010-08-12 03:47:50

Nathan Crookston wrote:
> To do what you'd like with Boost.Phoenix
> (#include <boost/spirit/home/phoenix.hpp> to get all of it) you could
> replace most of operator<< with the following:
>
> namespace bp = boost::phoenix;
> std::for_each(points.begin(), points.end(),
>   stream << *bp::bind(&DataPoint::m_Time, bp::arg_names::_1) << " ");
>
> Much cleaner, if that option's available to you.
>
> Good luck,
>
> Nate
>   
Thanks for the alternative.  It does look much cleaner.  I've seen boost 
Phoenix around but haven't really gotten into to it.  Is there a web 
article that describes the pros and cons of using Phoenix versus 
Lambda.  From an outside perspective it looks like they do the same 
things.  This of course leads me to ask why there are two libraries.

Ryan