[boost] Re: Review of Daryle Walker's "More IO" library beginstoday, August 21, 2004.

From: Jonathan Turkanis (technews_at_[hidden])
Date: 2004-08-27 22:48:53

"Daryle Walker" <darylew_at_[hidden]> wrote:
> On 8/22/04 2:19 PM, "Pavel Vozenilek" <pavel_vozenilek_at_[hidden]> wrote:
>
______________________________________________________________
> > 7. stream_buf_wrapping.hpp: there are three hardcoded
> >  constructors like:
> >
> >   template < typename T1, typename T2, typename T3 >
> >   basic_wrapping_ios( T1 x1, T2 x2, T3 x3 )
> >
> >  for 1, 2 and 3 parameters though base_from_member
> >  supports up to 10 parameters.
>
> I wrote base_from_member, and I extended BFM after initially writing
> More-I/O.
>
> >  Boost.Preprocessor can be used here to generate
> >  contructors of all available arities.
>
> Any suggestions on how?  And should I leave the arity number available in
> BFM (as a #define) so others can mirror it?

I've attached a version of base_from_member.hpp with configurable maximum arity,
defaulting to 10. If you need higher arity, you #define
BOOST_BASE_FROM_MEMBER_MAX_ARITY to an appropriate value before including the
header.

The same technique will work for streambuf wrapping.

Jonathan

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`
end