[Boost-users] Re: Looking for more advanced type_traits-like functionality

From: David Abrahams (dave_at_[hidden])
Date: 2004-06-07 10:06:45

"Wolfgang Meyer" <Wolfgang.Meyer_at_[hidden]> writes:

>> that is something like this: How can I determine if a type T has such and
>> such member? It
>>
>> would look like something like this:
>>
>> has_member<T, paint>::result (true if T::paint() exists)
>> has_member<T, m_size>::result (true if T::m_size exists)
>
> AFAIK, checking for arbitrary members at compile time is not possible in a 
> portable way.
>
> However, it seems that you can check for operators:
>
> http://lists.boost.org/MailArchives/boost/msg29007.php

Much better techniques than the ones shown there are now known.

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