Re: [boost] Comment on string / unicode discussion

From: David Abrahams (dave_at_[hidden])
Date: 2006-07-06 18:03:22

"Robert Ramey" <ramey_at_[hidden]> writes:

>> Thanks; I think I see why you need the templated ctors now.
>>
>> w.r.t. composing with a typedef, would
>>
>>     boost::archive::iterators::insert_linebreaks<
>>         boost::archive::iterators::base64_from_binary<
>>             boost::archive::iterators::transform_width<
>>                 const char *,
>>                 6,
>>                 8
>>             >::type
>>        >::type
>>         ,72
>>         ,const char // cwpro8 needs this
>>     >::type
>> base64_text;
>>
>> be much worse, for your purposes?
>
> Hmmm - I read this as creating an instance of base64_text - presumably on 
> the stack.

Eh?  All I did was make an exact copy of code you posted, and change
">" to ">::type" everywhere.

> I don't see how I could use this to do:
>
>> std::copy(
>>     base64_text(address),
>>     base64_text(
>>         address + count
>>     ),
>>     oi
>> );
>
> which is what I REALLY wanted to do.

That's the templated ctor part.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com