Re: [Boost-users] MPL design question

Subject: Re: [Boost-users] MPL design question
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-03-10 20:58:52

AMDG

Jesse Perla wrote:
> I have a class that is getting a huge number of template parameters 
> (mostly a bunch of size_t used for vector sizes).  They have a natural 
> organization into groups, but almost all of them have a default as 0.
>
> How do you suggest that I design the template parameter for this?  Is 
> there any way to use some kind of associative container so I could 
> look these up by "name" and default to 0 if they aren't there?  I 
> can't see how to use mpl::map to do this kind of stuff.

Boost.Parameter support this kind of usage.
In any case, you probably need to use
mpl::int_ instead of an integral constant.

In Christ,
Steven Watanabe