Re: [cpp-netlib-devel] URI processing (Was Re: Work Left)

[K. G. <kim...@gm...>]

Hey there,

On Mon, Oct 13, 2008 at 14:57, Dean Michael Berris
<mik...@gm...> wrote:
>
>> Yes. But since that tag will be used throughout the implementation,
>> passed on to basic_request, basic_message, etc., I'd have to
>> specialize all traits for the new tag, even if I'm only changing one,
>> right? I think that's where my ability to picture this breaks :)
>>
>
> Actually, not really -- or as far as I recall, not at all.
>
> Consider the example below:
>
> template <class Tag>
> struct string {
>  typedef std::string type;
> };
>
> template <>
> struct string<tags::wide_default> {
>  typedef std::wstring type;
> };
>
> If you really needed to customize with your own tag, then you can
> override the default implementation (unspecialized version). :-D

Ah, I see. Yeah, that makes sense.

As all the default cases were left with a variation of

    template <class Tag>
        struct string {
            typedef void type;
        };

, I didn't see that coming. But sure, if the default actually defines
defaults, everything will be dandy! :)

- Kim