RE: [boost] Re: [MPL] Making Generators

From: Aleksey Gurtovoy (agurtovoy_at_[hidden])
Date: 2002-12-07 03:05:53

David Abrahams wrote:
> > MPL's implementation ("boost/mpl/aux_/has_xxx.hpp") is 
> > known to work on Comeau, Intel (all versions), MSVC (all versions),
> > Metroweks 8.3/8.2 and GCC 3.2. There is no known way to make it 
> > work on Borland. You can test it against any other compiler by 
> > trying out "boost/libs/mpl/test/aux_/has_xxx.cpp" test case.
> 
> It also works with GCC 2.95.2 with some restrictions. I don't remember
> what they are offhand. Something like that the type must be a class?
> ... that doesn't sound quite right because we could work around it
> with an is_class pre-test.

I wouldn't call it "works": it returns 'true' if the member exists,
otherwise it fails with a compilation error (whether the tested type is a
class or not). Or it would fail if we didn't #ifdef'ed it to always return
'false'.

Aleksey