Re: [Boost-users] [Proto] Storing an Expression Template as a Data Member

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So, what about the following?

#define DEFINE_MY_CLASS(name, exp) \

MyClass<result_of::deep_copy<BOOST_TYPEOF(exp)>::type> name(deep_copy(exp))

Sure. Or you could move the deep-copy action an implementation detail of MyClass and keep the macro simple. Whichever.

Right. Either way, how should I deal with copy construction? Is the deeply copied thing automatic for copy construction? Or, should I make another deep copy each time?

No, I'm not saying that. I'm saying you can use >> and Proto to build an expression tree, and use a transform to compose that tree into a function object. <snip>

I see. Hmmm... I guess the same technique wouldn't be working uniformly for my entire syntax. Thanks for the suggestion though. :)