[boost] Re: Constrained genericity at last? (any interest inanoperator traits/concept traits library?)

From: David Abrahams (dave_at_[hidden])
Date: 2004-09-14 08:20:17

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

> "Jonathan Turkanis" <technews_at_[hidden]> wrote in message
> news:ci5qf6$ioc$1_at_sea.gmane.org...
>
>> The library is here:  http://tinyurl.com/43ddj.
>
> That's the link for the docs. The download page is here:
> http://tinyurl.com/4axzk.

Surely this functionality already exists somewhere in the MPL?  Yup,
there's is_lambda_expression<E>::value (which is true iff
is_placeholder_expression<E>::value | is_metafunction_class<E>::value).

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com