[boost] Re: MPL problems with como [repost]

From: David Abrahams (dave_at_[hidden])
Date: 2004-01-04 18:03:22

"Jonathan Turkanis" <technews_at_[hidden]> writes:

> [I posted this message last week. I know people are busy, so I don't expect
> immediate bug fixes or long explanations, particularly since I found a
> workaround some time ago for my intended application. But if I am wrong that
> the described behavior represents a bug of some sort, I'd like to know.]
>
> I have found that some MPL algorithms and metafunctions fail to compile on
> como 4.3.3 when applied to sequences containing certain lambda expressions.
> The simplest example is:
>
>     BOOST_STATIC_ASSERT( !empty< list< deref<_> > >::value );
>
> Almost every computation I have tried on sequences containing deref<_> fail.
> The output in the above case is shown below.

I'm sorry, I tried to look at this one and was stumped.  I'll give it
another shot in a minute.

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