Re: ublas : size1 <-> nrows

From: jhrwalter (walter_at_[hidden])
Date: 2002-01-25 05:08:05

--- In boost_at_y..., Toon Knapen <toon.knapen_at_s...> wrote:
> jhrwalter wrote:
> 
> > --- In boost_at_y..., Toon Knapen <toon.knapen_at_s...> wrote:
> > 
> >>jhrwalter wrote:
> >>
> >>
> >>>>Basically, just use a function like this:
> >>>>
> >>>>  template<int N> ... size(Int<N>);
> >>>>
> >>>>Works in MSVC++ 6 and has neat syntax.
> >>>>
> >>>>
> >>>How do you like the idea of using free functions like 
> >>>
> >>>template<class M, int N> 
> >>>size_t size (const M &m, int<N>);
> >>>
> >>>for these operations instead?
> >>>
> >>
> >>I would find it less intuitive.
> >>
> >>Would a free function be possible in MSVC, but a template member 
> >>function would not ? (I'm not familiar with MSVC)
> >>
> >  
> > On the long run I see two options: MSVC gets more standard 
conforming 
> > or we'll have to consider dropping MSVC compatibility to use more 
> > language features.
> >  
> > In the meantime free functions could be an easy way to achieve 
some 
> > compromises.
> 
> 
> OK.
> 
> But what I actually was asking was : are template members in 
general not 
> possible with MSVC ? (I'm not familiar with MSVC ; I know, there's 
a lot 
> of bandwidt on MSVC compatibility but I'm lucky to be able to skip 
all 
> that at the moment) 
 
Sorry, I disgressed.
 
Member templates are generally working under MSVC. My problems with 
MSVC started, when I tried to define templated nested classes 
referencing the outer class, for example:
 
class vector {
    // lots of other stuff
 
    template<class V>
    class iterator_base;
 
    typedef iterator_base<vector> iterator;
    typedef iterator_base<const vector> const_iterator;
};
 
MSVC had the same problem with it (if I remember correctly) as we 
encountered when trying to implement the Barton&Nackman trick as 
usual (for the record: we got C2027 compiler errors) .
 
Regards
 
Joerg