Re: [boost] lifetime of ranges vs. iterators

From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2008-09-02 06:27:47

On Tue, Sep 2, 2008 at 5:34 AM, Steven Watanabe <watanabesj_at_[hidden]> wrote:
> AMDG
>
> Giovanni Piero Deretta wrote:
>>
>> Hum, I've played a little with some mockup iterators, and  I can
>> definitely see the N^2 stack growth, and with some expression template
>> heavy program, I wouldn't be surprised if the  growth would actually
>> become noticeable (even if it weren't enough to blow the stack, it
>> could still produce cache misses and such).   I can't seem to come-up
>> with any clever scheme to reduce the growth (short of using pointers
>> to the original range of course).
>>
>> Enough for today. Maybe tomorrow I'll get some idea.
>>
>
> I've been playing around with this a bit.
> See attached.
>

I can't compile it because I lack a recent phoenix. What numbers are
you getting?

Also, isn't end() still O(N^2) on the stacking depth?

-- 
gpd