Re: [boost] [generic programming] header file for general "default" operations for C++ classes

Subject: Re: [boost] [generic programming] header file for general "default" operations for C++ classes
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2016-05-04 20:17:48

On 5/05/2016 07:45, Walt Karas wrote:
> Yes, but there is not full overlap of the capabilities.  Fusion doesn't seem
> to provide a way to define a class with access control, base classes, and
> member functions as a sequence.  I'm assuming BOOST_FUSION_DEFINE_STRUCT has
> no runtime overhead, although I could not find and explicit statement to
> that effect.

If you put all the members that should participate in the comparison 
into the fusion sequence, you can then wrap this sequence in another 
class with base classes and other methods.

Depending on requirements, the fusion sequence could either be another 
base class, or it could be a member of the wrapper class with the 
wrapper class defining delegating operators for the comparisons.