Proto for Boost mailing list page: Re: [proto] user docs for advanced features

Subject: Re: [proto] user docs for advanced features
From: eric_at_[hidden]
Date: 2012-01-11 13:21:50

(Sorry for the top post.)

Domains do behave like an inheritance hierarchy with one caveat: default_domain is special. Expressions in the default_domain, or sub-domains thereof, can interoperate with expressions in other domains. So, imagine c++ inheritance where you can opt-in to inheritance from Object, but even if you don't, things that do can still play with objects in your hierarchy.

There isn't a clean analogy here. I wonder if the behavior of domains should change to make the analogy cleaner; every domain could be a sub-domain of default_domain. So everything can be combined with everything else. Very loose. Maybe too loose, I don't know. But it would be easier to explain. 

Eric


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From: Fernando Pelliccioni <fpelliccioni_at_[hidden]>
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Date: Wed, 11 Jan 2012 09:02:52 
To: Discussions about Boost.Proto and DSEL design<proto_at_[hidden]>
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Subject: Re: [proto] user docs for advanced features

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