Re: [Boost-users] using the fusion library

From: Ovanes Markarian (om_boost_at_[hidden])
Date: 2006-12-11 05:13:21

Hi!

I am not aware of fusion, but you can increase compiler's heap by using the /Zm MSVC option.
Please read in MSDN about it. I was able to solve my problems by increasing it (static maps with
around 150 Types).

Good Luck,
Ovanes Markarian

On Mon, December 11, 2006 11:01, craigp wrote:
> i've been looking at the fusion library for a few days now, and i feel like i'm
> missing something (or just trying to make this fit for a use-case it's simply
> not suited for). i'm looking as using it for compile-time introspection for,
> let's say, serialization. one thing i was curious about was whether i can
> statically map each of my persistent types to a string (which could be used as
> the name of an xml element/attribute). i quickly determined that a map (of
> fusion-pairs) with more than just a few elements quickly overwhelms the
> compiler (msvc 7.1; raising the limit of 20 to ~50 just makes the compiler
> barf).
>
> any thoughts on this? fusion provides what appears to be a lot of
> infrastructure, but i can't seem to take advantage of most of it ('out of the
> box', anyway). the best i've come up with so far is to create a for_each_it
> algorithm which, instead of calling back the visitor function with the value,
> calls it back with the corresponding iterator instead. this seems to work ok,
> but it appears i'd need to hand-write each algorithm (as well as each
> sequence), and i don't think that's how it was intended to be used. ;-)
>
> any thoughts? am i just barking up the wrong tree? what kinds of
> applications/use-cases were in mind when fusion was designed? most things i've
> thought of would (i'd guess) be impractical with today's compilers. i think
> there's some connection with fusion and spirit... how does spirit avoid the
> compiler limits i seem to run into?
>
> thanks!
> --craig
>
>
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