[boost] [graph] property_value no longer valid for bgl_named_parameters

Subject: [boost] [graph] property_value no longer valid for bgl_named_parameters
From: Alex Hagen-Zanker (ahh34_at_[hidden])
Date: 2012-09-04 07:31:25

The transition from  Boost 1.49 to 1.51 gave me a breaking change in the 
graph library:

Originally I used the property_value struct to get the type of a named 
parameter, like this:  property_value<bgl_params, Tag>::type;

This no longer works and the current use seems to be: 
get_param_type<Tag, bgl_params>::type;

Is this a regression? Or was I just using the library in the wrong way?

Thanks, Alex