Geometry Boost List: [ggl] pre-/post-increment op on iterators

Subject: [ggl] pre-/post-increment op on iterators
From: Barend Gehrels (Barend.Gehrels)
Date: 2009-04-25 18:13:35

> OK, this test case does not show incredible performance
> gain, but if we look around on the Web and Usenet comp.lang.c++.*
> we can find different results - all if not most of them show that
> pre-increment operator performs better. How better, numbers are
> different but may be big :-)
>
> Here is one of examples:
>
> http://antonym.org/2008/05/stl-iterators-and-performance.html
>
>   
Great. They also mention boost::foreach. Actually I recently did 
consider using this, it makes things concise. However, it is not used 
often nternally within boost libraries. Don't know why not...
>> So yes, we should change it. Good you point it out.
>>     
>
> OK, I will.
>   
Also great, but I don't know if you intended to say that you'll change 
all of them? That will be a lot. Cannot be done automatically, alas, 
because of things like prev = it++ (where pre-increment will destroy 
behaviour...)

Barend

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/ggl/attachments/20090426/d0f98743/attachment.html