Re: Fast swapping of STL containers

From:
Pete Becker <pete@versatilecoding.com>
Newsgroups:
comp.lang.c++
Date:
Fri, 24 Jun 2011 07:34:35 -0400
Message-ID:
<2011062407343596122-pete@versatilecodingcom>
On 2011-06-24 06:09:10 -0400, Ian Collins said:

On 06/24/11 09:58 PM, ittium wrote:

Please don't snip attributions!

 > On 06/24/11 09:27 PM, Ian Collins wrote:

Well come on, it's the library author's job to write efficient code. If
they didn't, users would soon complain. They have implementation
specific short cuts available to them that we users do not.


For most of the cases, You are right. When a operation is likely to
take place large number of times per second than exact processing
complexity becomes very important.


What difference does the number of calls make? The operation is either
efficient, or it isn't.


The more it's called, the more likely it is to be a bottleneck. If I
only call a function once, it doesn't matter whether it takes 1 ms or 2
ms.

--
  Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com) Author of "The
Standard C++ Library Extensions: a Tutorial and Reference
(www.petebecker.com/tr1book)

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