Re: [Boost-users] [Proto] Reducing domain check in operator

Subject: Re: [Boost-users] [Proto] Reducing domain check in operator
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2009-02-26 14:18:24

Eric Niebler a écrit :
> Cool.
Small variation. If I want the domain of A(B) always be X, I just 
specify it with make_expr ?
>> Concerning the other approach, I guess it boils down to have terminal 
>> of the given function object laying around?
>>
>> terminal< exponent_ > exponent  ={{}};
> ----------------------^ ::type here
>
> Right, although it would change the resulting tree, because 
> exponent(x) would have tag type proto::tag::function instead of 
> nt2::tag::exponent_.  You'd have to make corresponding changes to your 
> grammar.
To be abel to be called and produce reuslts, exponent_ just need to be a 
Polymorphic Function Object I assume ?
> Hard to say. The only advice I can give is to try it and see.
Seems I found my occupation for this week-end then.
My main concern is that having lots of declared but unused const object 
may force the compiler to compile all fo them aka ending in
a verrrrrrry long compile-time and prolly large executable too.

-- 
___________________________________________
Joel Falcou - Assistant Professor
PARALL Team - LRI - Universite Paris Sud XI
Tel : [phone]