[boost] Re: Re: Output Formatters (was I/O Formatting Manipulators)

From: Jonathan Turkanis (technews_at_[hidden])
Date: 2003-12-09 12:07:01

"Reece Dunn" <msclrhd_at_[hidden]> wrote in message
news:BAY7-F12BPqiKYKHEKU0001a221_at_hotmail.com...
>
> It also works on borland 5.5.1 :). I was thinking that it would be
possible
> to rewrite the deduction code using Boost.MPL, but didn't know that much
> about it. Great work!
>

Glad to help.

>
> >2. My gut feeling tells me that the library can be simplified a bit. I'm
> >particularly worried about the large number of object generators. Perhaps
a
> >more extensive tutorial would clear up some of my doubts. With your
> >permission, I'd like to hack on the code a bit to see if I can make it a
> >little simpler, without losing functionality.
>
> Feel free. My reasoning as to having the three variants was thus:
>
> [1] The base generator should supply default formatting type (char *) and
> Outputter.
> [2] Custom formatting types are supported as a function template
parameter.
> e.g.
>
>    boost::io::formatlistex< wchar_t * >( l );
>
> Since you can't define a default value, this has to be a seperate
generator.
>
> [3] Custom outputters are supported as a specialist generator.
>
>    boost::io::formatobout( o, ... );
>
> These have different names because of problems with locating the correct
> overloaded variant.
>
> Each of these variants is required for each outputter class to allow
maximum
> flexibility.
>

I have some ideas, but they're not very well developed. I'll let you know if
and when something comes of them.

Again, good work!

Jonathan