[boost] Re: [mpl?] loki -> boost

From: David Abrahams (dave_at_[hidden])
Date: 2004-02-20 16:09:56

Brian McNamara <lorgon_at_[hidden]> writes:

> On Fri, Feb 20, 2004 at 01:21:06PM -0500, Jody Hagins wrote:
>> I have a bunch of code that uses loki.  I am trying to convert it to use
>> boost instead.  However, I am having a very difficult time finding
>> concepts in boost to replace those in loki.  I have looked for something
>> to help in this, but I have not had much success.  I have read through
>> the MP documentation, and I am even more confused.
>> 
>> For example, I use Loki::Int2Type, and according to a loose
>> interpretation of section 2.3.6, mpl::int_c<> may be what I am looking
>> for (at least for this one specific case).  However, when I went to look
>> at the source to make sure it does what I think it does, I could not
>> find it anywhere.  I have 1.31.0, extracted from the tar.gz file, and
>> did a complete find, but the only place I can find reference to it is in
>> .sgml files.
>> 
>> Anyone know what this became, or how to correct my brain-dedness?
>> 
>> shandalle:jody> find .  | xargs egrep 'int_c[:space:]*<'
>
> I think the problem is that much Boost library code is
> preprocessor-generated.
>
> Maybe doing
>    // foo.cpp
>    #include "boost/mpl/int.hpp"
> and then trying
>    gcc -E foo.cpp
> will help you find the code you seek.  (I haven't actually tried.)

There are pre-generated headers in boost/mpl/aux_/preprocessed/...
Those are the ones that actually get used.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com