Re: [boost] Re: cycle_iterator

From: Thomas Witt (witt_at_[hidden])
Date: 2002-02-21 13:09:42

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Gennadiy,

On Tuesday 19 February 2002 20:15, rogeeff wrote:
> >
> > Making an iterator const means fixing its position and thats
>
> exactly what is
>
> > needed here. The range boundaries should be immutable for an
>
> cycle_iterator.
>
>
> Sorry it was late and I did mix two independent issues here. My first
> point was irrelevant. But still you can't make Policies class member
> const because you can't implement operator= for iterator_adaptor.
> MSVC does not compile it and so would I on it's place. If you have
>  T const member;
> in class definition, class became noncopyable. Am I wrong?

No you're not. I missed that point.

> >
> > Honestly, I _do_.
>
> Could you provide an example?. The interface seems reasonable.
>

Seems like you caught me pants down on that one. I have to admit that I only 
thought I need it. Checking my code I could only find 
make_cycle_iterator(x.begin(), make_pair(x.begin(), x.end())). 
I still think its an omission not having it, but as long as I do not have an 
example I will not object if you throw it out again.

Thomas

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- -- 
Dipl.-Ing. Thomas Witt
Institut fuer Verkehrswesen, Eisenbahnbau und -betrieb, Universitaet Hannover
voice: [phone] - 4273, fax: [phone]
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