Re: [boost] [fusion] value_at of transform_view

From: Joel de Guzman (joel_at_[hidden])
Date: 2007-11-22 06:02:10

shunsuke wrote:
> Joel de Guzman wrote:

>>> Is there any pitfall if `value_at` is the same as `at` under transform_view?
>> After some more thinking, yes.
> 
> I still don't know why, but I know you are always right.

Nah. No one's always right ;-) I'm always open to discussions
like this.

> I understood it probably.
> If as_vector means "copy", rvalue should be passed to FunctionObject.
> 
> 
> In fact, I'm trying to implement "zip".
> If interested, see: http://tinyurl.com/22q6cl
> as_vector intercepts mutability.
> I'm now lost, but I will retry.

Dan Marsden probably faced the same problems as you when he
implemented fusion zip. I'm CC'ing him. I think he's the best
person to ask questions. In the meantime, you might want to
take a look at fusion zip.

> I really apologize my mega-noise.

Hey, I really appreciate discussions like this.

Regards,
-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net