"Angus Leeming" wrote in message
news:ch7h3d$466$1@sea.gmane.org...
I'm trying to ascertain whether a given class is, or is derived from,
std::basic_ostream, but I've ground to a halt.
I've attached a somewhat improved version inspired by your attempt. (Thanks!) It
only works on compilers which support has_xxx, but it should handle the case of
private inheritance now, by delegating to is_base_and_derived.
Note that with the current cvs it should not be necessary to write
mpl::and_< mpl::bool_, ...
You can simply say
mpl::and_< has_char_type<U>, ...
Best Regards,
Jonathan
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